Aligning Systems of Equations












4















I'm trying to line up the variables of systems of equations. The following code:



$$left\{

begin{aligned}

&alpha + 2&beta + &gamma & = 0 \\

3&alpha + 7&beta + 5&gamma & = 1

end{aligned}

right.$$


produces the following image:



enter image description here



I want the Greek letters and the math symbols to be aligned, with appropriate spacing in between coefficients. I've tried using begin{aligned} end{aligned} and begin{array}{ll} end{array}{ll} as well, but they also don't provide the desired outcome.



Would anyone be kind enough to help me out? Thank you.






math-mode align







share|improve this question




















  • 1





    You can try the package systeme: ctan.org/pkg/systeme .

    – projetmbc
    Feb 21 at 15:20











  • See also tex.stackexchange.com/questions/35174/…

    – Steven B. Segletes
    Feb 21 at 16:25











  • See Why is [ … ] preferable to $$?

    – Werner
    Feb 21 at 16:33
















4















I'm trying to line up the variables of systems of equations. The following code:



$$left\{

begin{aligned}

&alpha + 2&beta + &gamma & = 0 \\

3&alpha + 7&beta + 5&gamma & = 1

end{aligned}

right.$$


produces the following image:



enter image description here



I want the Greek letters and the math symbols to be aligned, with appropriate spacing in between coefficients. I've tried using begin{aligned} end{aligned} and begin{array}{ll} end{array}{ll} as well, but they also don't provide the desired outcome.



Would anyone be kind enough to help me out? Thank you.






math-mode align







share|improve this question




















  • 1





    You can try the package systeme: ctan.org/pkg/systeme .

    – projetmbc
    Feb 21 at 15:20











  • See also tex.stackexchange.com/questions/35174/…

    – Steven B. Segletes
    Feb 21 at 16:25











  • See Why is [ … ] preferable to $$?

    – Werner
    Feb 21 at 16:33














4












4








4








I'm trying to line up the variables of systems of equations. The following code:



$$left\{

begin{aligned}

&alpha + 2&beta + &gamma & = 0 \\

3&alpha + 7&beta + 5&gamma & = 1

end{aligned}

right.$$


produces the following image:



enter image description here



I want the Greek letters and the math symbols to be aligned, with appropriate spacing in between coefficients. I've tried using begin{aligned} end{aligned} and begin{array}{ll} end{array}{ll} as well, but they also don't provide the desired outcome.



Would anyone be kind enough to help me out? Thank you.






math-mode align







share|improve this question
















I'm trying to line up the variables of systems of equations. The following code:



$$left\{

begin{aligned}

&alpha + 2&beta + &gamma & = 0 \\

3&alpha + 7&beta + 5&gamma & = 1

end{aligned}

right.$$


produces the following image:



enter image description here



I want the Greek letters and the math symbols to be aligned, with appropriate spacing in between coefficients. I've tried using begin{aligned} end{aligned} and begin{array}{ll} end{array}{ll} as well, but they also don't provide the desired outcome.



Would anyone be kind enough to help me out? Thank you.






math-mode align




math-mode align






share|improve this question















share|improve this question













share|improve this question




share|improve this question








edited Feb 21 at 15:14









JouleV

7,89222053




7,89222053










asked Feb 21 at 15:12









SeankalaSeankala

1234




1234








  • 1





    You can try the package systeme: ctan.org/pkg/systeme .

    – projetmbc
    Feb 21 at 15:20











  • See also tex.stackexchange.com/questions/35174/…

    – Steven B. Segletes
    Feb 21 at 16:25











  • See Why is [ … ] preferable to $$?

    – Werner
    Feb 21 at 16:33














  • 1





    You can try the package systeme: ctan.org/pkg/systeme .

    – projetmbc
    Feb 21 at 15:20











  • See also tex.stackexchange.com/questions/35174/…

    – Steven B. Segletes
    Feb 21 at 16:25











  • See Why is [ … ] preferable to $$?

    – Werner
    Feb 21 at 16:33








1




1





You can try the package systeme: ctan.org/pkg/systeme .

– projetmbc
Feb 21 at 15:20





You can try the package systeme: ctan.org/pkg/systeme .

– projetmbc
Feb 21 at 15:20













See also tex.stackexchange.com/questions/35174/…

– Steven B. Segletes
Feb 21 at 16:25





See also tex.stackexchange.com/questions/35174/…

– Steven B. Segletes
Feb 21 at 16:25













See Why is [ … ] preferable to $$?

– Werner
Feb 21 at 16:33





See Why is [ … ] preferable to $$?

– Werner
Feb 21 at 16:33










3 Answers
3






active

oldest

votes


















5














First of all, do not use $$ ... $$, which is plain TeX, use the LaTeX construct [ ... ].



Second, 4 alignment points require 7 ampersands, not 4: each new column of alignment has to be introduced by an ampersand. So n alignment points require 2n–1 ampersands.



Last: use alignat (or alignedat) to have full control on the spacing between columns of alignment.



Here is a possible code:



[ left{

begin{alignedat}{4}

&alpha &{} + 2&beta + {} & &gamma & & = 0 \\

3&alpha &{} + 7&beta + 5 & &gamma & & = 1

end{alignedat}


However, using the systeme package makes it simpler to type:



[ systeme[alphabetagamma]{alpha + 2beta +gamma = 0, 3alpha + 7beta + 5gamma = 1} ]


enter image description here






share|improve this answer


























  • I had no idea that $ was plain TeX, thanks! Unfortunately it seems that for the Github Markdown I'm trying to edit, [ doesn't seem to work... But begin{alignedat}{4} end{alignedat} works perfectly!

    – Seankala
    Feb 21 at 15:36











  • I've updated with a simpler way to type (the systeme command from the homonymous package).

    – Bernard
    Feb 21 at 15:38






  • 1





    In your first method, the spacing around the = is not correct.

    – Steven B. Segletes
    Feb 21 at 15:42






  • 1





    amsldoc (amsmath documentation) and systeme. Feel free to ask any questions.

    – Bernard
    Feb 21 at 16:08






  • 1





    The empty curly braces are there because $+$ (or $-$) are binary operators with a special spacing w.r.t. the elements on the right and on the left. This can be destroyed by an ampersand, and to compensate, one has to add an empty argument, namely {}. For the number of &, maybe I was not clear enough: each column of alignment, but the first, has to be introduced by an &. Inside this column, the alignment point is specified with another &. Check on my code, you should see this rule is respected. Is this clear?

    – Bernard
    Feb 21 at 16:26



















6














Something like this?



documentclass{article}

usepackage{tabstackengine}

begin{document}

[

left{

setstackgap{L}{18pt}

Matrixstack[r]{

alpha  +& 2beta +&  gamma =& 0 \

3alpha +& 7beta +& 5gamma =& 1

}

right.

]

end{document}


enter image description here






share|improve this answer































    4














    Here's a solution that requires only the basic array package. The following code also sets up a custom array-like environment.



    enter image description here



    documentclass{article}
    
usepackage{array} % for "newcolumntype" macro
    
newcolumntype{C}{>{{}}c<{{}}}
    
%% set up a little custom enrironment:
    
newenvironment{myarray}[1]{%
    
   setlengtharraycolsep{0pt}
    
   left{ begin{array}{#1}}{%
    
   end{array} right.}
    

    
begin{document}
    
[
    
begin{myarray}{rCrCrCl}
    
 alpha &+& 2beta &+&  gamma &=& 0 \
    
3alpha &+& 7beta &+& 5gamma &=& 1
    
end{myarray}
    
]
    
end{document}





    share|improve this answer

























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      3 Answers
      3






      active

      oldest

      votes








      3 Answers
      3






      active

      oldest

      votes









      active

      oldest

      votes






      active

      oldest

      votes









      5














      First of all, do not use $$ ... $$, which is plain TeX, use the LaTeX construct [ ... ].



      Second, 4 alignment points require 7 ampersands, not 4: each new column of alignment has to be introduced by an ampersand. So n alignment points require 2n–1 ampersands.



      Last: use alignat (or alignedat) to have full control on the spacing between columns of alignment.



      Here is a possible code:



      [ left{
      
begin{alignedat}{4}
      
&alpha &{} + 2&beta + {} & &gamma & & = 0 \\
      
3&alpha &{} + 7&beta + 5 & &gamma & & = 1
      
end{alignedat}


      However, using the systeme package makes it simpler to type:



      [ systeme[alphabetagamma]{alpha + 2beta +gamma = 0, 3alpha + 7beta + 5gamma = 1} ]


      enter image description here






      share|improve this answer


























      • I had no idea that $ was plain TeX, thanks! Unfortunately it seems that for the Github Markdown I'm trying to edit, [ doesn't seem to work... But begin{alignedat}{4} end{alignedat} works perfectly!

        – Seankala
        Feb 21 at 15:36











      • I've updated with a simpler way to type (the systeme command from the homonymous package).

        – Bernard
        Feb 21 at 15:38






      • 1





        In your first method, the spacing around the = is not correct.

        – Steven B. Segletes
        Feb 21 at 15:42






      • 1





        amsldoc (amsmath documentation) and systeme. Feel free to ask any questions.

        – Bernard
        Feb 21 at 16:08






      • 1





        The empty curly braces are there because $+$ (or $-$) are binary operators with a special spacing w.r.t. the elements on the right and on the left. This can be destroyed by an ampersand, and to compensate, one has to add an empty argument, namely {}. For the number of &, maybe I was not clear enough: each column of alignment, but the first, has to be introduced by an &. Inside this column, the alignment point is specified with another &. Check on my code, you should see this rule is respected. Is this clear?

        – Bernard
        Feb 21 at 16:26
















      5














      First of all, do not use $$ ... $$, which is plain TeX, use the LaTeX construct [ ... ].



      Second, 4 alignment points require 7 ampersands, not 4: each new column of alignment has to be introduced by an ampersand. So n alignment points require 2n–1 ampersands.



      Last: use alignat (or alignedat) to have full control on the spacing between columns of alignment.



      Here is a possible code:



      [ left{
      
begin{alignedat}{4}
      
&alpha &{} + 2&beta + {} & &gamma & & = 0 \\
      
3&alpha &{} + 7&beta + 5 & &gamma & & = 1
      
end{alignedat}


      However, using the systeme package makes it simpler to type:



      [ systeme[alphabetagamma]{alpha + 2beta +gamma = 0, 3alpha + 7beta + 5gamma = 1} ]


      enter image description here






      share|improve this answer


























      • I had no idea that $ was plain TeX, thanks! Unfortunately it seems that for the Github Markdown I'm trying to edit, [ doesn't seem to work... But begin{alignedat}{4} end{alignedat} works perfectly!

        – Seankala
        Feb 21 at 15:36











      • I've updated with a simpler way to type (the systeme command from the homonymous package).

        – Bernard
        Feb 21 at 15:38






      • 1





        In your first method, the spacing around the = is not correct.

        – Steven B. Segletes
        Feb 21 at 15:42






      • 1





        amsldoc (amsmath documentation) and systeme. Feel free to ask any questions.

        – Bernard
        Feb 21 at 16:08






      • 1





        The empty curly braces are there because $+$ (or $-$) are binary operators with a special spacing w.r.t. the elements on the right and on the left. This can be destroyed by an ampersand, and to compensate, one has to add an empty argument, namely {}. For the number of &, maybe I was not clear enough: each column of alignment, but the first, has to be introduced by an &. Inside this column, the alignment point is specified with another &. Check on my code, you should see this rule is respected. Is this clear?

        – Bernard
        Feb 21 at 16:26














      5












      5








      5







      First of all, do not use $$ ... $$, which is plain TeX, use the LaTeX construct [ ... ].



      Second, 4 alignment points require 7 ampersands, not 4: each new column of alignment has to be introduced by an ampersand. So n alignment points require 2n–1 ampersands.



      Last: use alignat (or alignedat) to have full control on the spacing between columns of alignment.



      Here is a possible code:



      [ left{
      
begin{alignedat}{4}
      
&alpha &{} + 2&beta + {} & &gamma & & = 0 \\
      
3&alpha &{} + 7&beta + 5 & &gamma & & = 1
      
end{alignedat}


      However, using the systeme package makes it simpler to type:



      [ systeme[alphabetagamma]{alpha + 2beta +gamma = 0, 3alpha + 7beta + 5gamma = 1} ]


      enter image description here






      share|improve this answer















      First of all, do not use $$ ... $$, which is plain TeX, use the LaTeX construct [ ... ].



      Second, 4 alignment points require 7 ampersands, not 4: each new column of alignment has to be introduced by an ampersand. So n alignment points require 2n–1 ampersands.



      Last: use alignat (or alignedat) to have full control on the spacing between columns of alignment.



      Here is a possible code:



      [ left{
      
begin{alignedat}{4}
      
&alpha &{} + 2&beta + {} & &gamma & & = 0 \\
      
3&alpha &{} + 7&beta + 5 & &gamma & & = 1
      
end{alignedat}


      However, using the systeme package makes it simpler to type:



      [ systeme[alphabetagamma]{alpha + 2beta +gamma = 0, 3alpha + 7beta + 5gamma = 1} ]


      enter image description here







      share|improve this answer














      share|improve this answer



      share|improve this answer








      edited Feb 21 at 17:18

























      answered Feb 21 at 15:23









      BernardBernard

      174k776206




      174k776206













      • I had no idea that $ was plain TeX, thanks! Unfortunately it seems that for the Github Markdown I'm trying to edit, [ doesn't seem to work... But begin{alignedat}{4} end{alignedat} works perfectly!

        – Seankala
        Feb 21 at 15:36











      • I've updated with a simpler way to type (the systeme command from the homonymous package).

        – Bernard
        Feb 21 at 15:38






      • 1





        In your first method, the spacing around the = is not correct.

        – Steven B. Segletes
        Feb 21 at 15:42






      • 1





        amsldoc (amsmath documentation) and systeme. Feel free to ask any questions.

        – Bernard
        Feb 21 at 16:08






      • 1





        The empty curly braces are there because $+$ (or $-$) are binary operators with a special spacing w.r.t. the elements on the right and on the left. This can be destroyed by an ampersand, and to compensate, one has to add an empty argument, namely {}. For the number of &, maybe I was not clear enough: each column of alignment, but the first, has to be introduced by an &. Inside this column, the alignment point is specified with another &. Check on my code, you should see this rule is respected. Is this clear?

        – Bernard
        Feb 21 at 16:26



















      • I had no idea that $ was plain TeX, thanks! Unfortunately it seems that for the Github Markdown I'm trying to edit, [ doesn't seem to work... But begin{alignedat}{4} end{alignedat} works perfectly!

        – Seankala
        Feb 21 at 15:36











      • I've updated with a simpler way to type (the systeme command from the homonymous package).

        – Bernard
        Feb 21 at 15:38






      • 1





        In your first method, the spacing around the = is not correct.

        – Steven B. Segletes
        Feb 21 at 15:42






      • 1





        amsldoc (amsmath documentation) and systeme. Feel free to ask any questions.

        – Bernard
        Feb 21 at 16:08






      • 1





        The empty curly braces are there because $+$ (or $-$) are binary operators with a special spacing w.r.t. the elements on the right and on the left. This can be destroyed by an ampersand, and to compensate, one has to add an empty argument, namely {}. For the number of &, maybe I was not clear enough: each column of alignment, but the first, has to be introduced by an &. Inside this column, the alignment point is specified with another &. Check on my code, you should see this rule is respected. Is this clear?

        – Bernard
        Feb 21 at 16:26

















      I had no idea that $ was plain TeX, thanks! Unfortunately it seems that for the Github Markdown I'm trying to edit, [ doesn't seem to work... But begin{alignedat}{4} end{alignedat} works perfectly!

      – Seankala
      Feb 21 at 15:36





      I had no idea that $ was plain TeX, thanks! Unfortunately it seems that for the Github Markdown I'm trying to edit, [ doesn't seem to work... But begin{alignedat}{4} end{alignedat} works perfectly!

      – Seankala
      Feb 21 at 15:36













      I've updated with a simpler way to type (the systeme command from the homonymous package).

      – Bernard
      Feb 21 at 15:38





      I've updated with a simpler way to type (the systeme command from the homonymous package).

      – Bernard
      Feb 21 at 15:38




      1




      1





      In your first method, the spacing around the = is not correct.

      – Steven B. Segletes
      Feb 21 at 15:42





      In your first method, the spacing around the = is not correct.

      – Steven B. Segletes
      Feb 21 at 15:42




      1




      1





      amsldoc (amsmath documentation) and systeme. Feel free to ask any questions.

      – Bernard
      Feb 21 at 16:08





      amsldoc (amsmath documentation) and systeme. Feel free to ask any questions.

      – Bernard
      Feb 21 at 16:08




      1




      1





      The empty curly braces are there because $+$ (or $-$) are binary operators with a special spacing w.r.t. the elements on the right and on the left. This can be destroyed by an ampersand, and to compensate, one has to add an empty argument, namely {}. For the number of &, maybe I was not clear enough: each column of alignment, but the first, has to be introduced by an &. Inside this column, the alignment point is specified with another &. Check on my code, you should see this rule is respected. Is this clear?

      – Bernard
      Feb 21 at 16:26





      The empty curly braces are there because $+$ (or $-$) are binary operators with a special spacing w.r.t. the elements on the right and on the left. This can be destroyed by an ampersand, and to compensate, one has to add an empty argument, namely {}. For the number of &, maybe I was not clear enough: each column of alignment, but the first, has to be introduced by an &. Inside this column, the alignment point is specified with another &. Check on my code, you should see this rule is respected. Is this clear?

      – Bernard
      Feb 21 at 16:26











      6














      Something like this?



      documentclass{article}
      
usepackage{tabstackengine}
      
begin{document}
      
[
      
left{
      
setstackgap{L}{18pt}
      
Matrixstack[r]{
      
alpha  +& 2beta +&  gamma =& 0 \
      
3alpha +& 7beta +& 5gamma =& 1
      
}
      
right.
      
]
      
end{document}


      enter image description here






      share|improve this answer




























        6














        Something like this?



        documentclass{article}
        
usepackage{tabstackengine}
        
begin{document}
        
[
        
left{
        
setstackgap{L}{18pt}
        
Matrixstack[r]{
        
alpha  +& 2beta +&  gamma =& 0 \
        
3alpha +& 7beta +& 5gamma =& 1
        
}
        
right.
        
]
        
end{document}


        enter image description here






        share|improve this answer


























          6












          6








          6







          Something like this?



          documentclass{article}
          
usepackage{tabstackengine}
          
begin{document}
          
[
          
left{
          
setstackgap{L}{18pt}
          
Matrixstack[r]{
          
alpha  +& 2beta +&  gamma =& 0 \
          
3alpha +& 7beta +& 5gamma =& 1
          
}
          
right.
          
]
          
end{document}


          enter image description here






          share|improve this answer













          Something like this?



          documentclass{article}
          
usepackage{tabstackengine}
          
begin{document}
          
[
          
left{
          
setstackgap{L}{18pt}
          
Matrixstack[r]{
          
alpha  +& 2beta +&  gamma =& 0 \
          
3alpha +& 7beta +& 5gamma =& 1
          
}
          
right.
          
]
          
end{document}


          enter image description here







          share|improve this answer












          share|improve this answer



          share|improve this answer










          answered Feb 21 at 15:23









          Steven B. SegletesSteven B. Segletes

          159k9204412




          159k9204412























              4














              Here's a solution that requires only the basic array package. The following code also sets up a custom array-like environment.



              enter image description here



              documentclass{article}
              
usepackage{array} % for "newcolumntype" macro
              
newcolumntype{C}{>{{}}c<{{}}}
              
%% set up a little custom enrironment:
              
newenvironment{myarray}[1]{%
              
   setlengtharraycolsep{0pt}
              
   left{ begin{array}{#1}}{%
              
   end{array} right.}
              

              
begin{document}
              
[
              
begin{myarray}{rCrCrCl}
              
 alpha &+& 2beta &+&  gamma &=& 0 \
              
3alpha &+& 7beta &+& 5gamma &=& 1
              
end{myarray}
              
]
              
end{document}





              share|improve this answer






























                4














                Here's a solution that requires only the basic array package. The following code also sets up a custom array-like environment.



                enter image description here



                documentclass{article}
                
usepackage{array} % for "newcolumntype" macro
                
newcolumntype{C}{>{{}}c<{{}}}
                
%% set up a little custom enrironment:
                
newenvironment{myarray}[1]{%
                
   setlengtharraycolsep{0pt}
                
   left{ begin{array}{#1}}{%
                
   end{array} right.}
                

                
begin{document}
                
[
                
begin{myarray}{rCrCrCl}
                
 alpha &+& 2beta &+&  gamma &=& 0 \
                
3alpha &+& 7beta &+& 5gamma &=& 1
                
end{myarray}
                
]
                
end{document}





                share|improve this answer




























                  4












                  4








                  4







                  Here's a solution that requires only the basic array package. The following code also sets up a custom array-like environment.



                  enter image description here



                  documentclass{article}
                  
usepackage{array} % for "newcolumntype" macro
                  
newcolumntype{C}{>{{}}c<{{}}}
                  
%% set up a little custom enrironment:
                  
newenvironment{myarray}[1]{%
                  
   setlengtharraycolsep{0pt}
                  
   left{ begin{array}{#1}}{%
                  
   end{array} right.}
                  

                  
begin{document}
                  
[
                  
begin{myarray}{rCrCrCl}
                  
 alpha &+& 2beta &+&  gamma &=& 0 \
                  
3alpha &+& 7beta &+& 5gamma &=& 1
                  
end{myarray}
                  
]
                  
end{document}





                  share|improve this answer















                  Here's a solution that requires only the basic array package. The following code also sets up a custom array-like environment.



                  enter image description here



                  documentclass{article}
                  
usepackage{array} % for "newcolumntype" macro
                  
newcolumntype{C}{>{{}}c<{{}}}
                  
%% set up a little custom enrironment:
                  
newenvironment{myarray}[1]{%
                  
   setlengtharraycolsep{0pt}
                  
   left{ begin{array}{#1}}{%
                  
   end{array} right.}
                  

                  
begin{document}
                  
[
                  
begin{myarray}{rCrCrCl}
                  
 alpha &+& 2beta &+&  gamma &=& 0 \
                  
3alpha &+& 7beta &+& 5gamma &=& 1
                  
end{myarray}
                  
]
                  
end{document}






                  share|improve this answer














                  share|improve this answer



                  share|improve this answer








                  edited Feb 21 at 16:13

























                  answered Feb 21 at 15:44









                  MicoMico

                  284k31388778




                  284k31388778






























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