LyX ⇒ Eqnarray-Environment with Aligned Text

[Stanislaus Gurjewitsch]

Hello!

I want to display several formulas with numeration, but I also need a "comment" for each formula:

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(1)  X = Y + Z       (Using theorem Xy)
(2)  X = Y + A + A   (Doing ....)
(3)  ...

But all I can get is this (if I put the text directly after the equations)

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(1) X = Y + Z (Using theorem Xy)
(2) X = Y + A + A (Doing ....)
(3) ...

Is there a way to align (just) the text to the right? (without doing it manually)
Is Eqnarray the right choice?

I'm a LaTeX and LyX newbie, I hope you can help me
Thanks in advance

[php1ic]

Hi Stanislaus,

The eqnarray environment has inconsistent spacing so use align instead. One of the moderators has written an article about why

http://texblog.net/latex-archive/maths/ ... vironment/

For your problem, the code below seems to do what you want.

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\begin{align}
x &= y+z   &&\mbox{(Using theorem xy)}\\
x &= y+a+a &&\mbox{(Doing)}
\end{align}