Here is what I have:
\documentclass{article}
\usepackage{amsmath}
\begin{document}
\begin{align*}
&f(x) = y \\
&f(g(x)) = g(y) \\
&15
\end{align*}
Here is some text commenting on the similarity of these two sets of equations .
\begin{align*}
&f'(x) = y' \\
&f'(g'(x)) = g'(y) \\
&15000
\end{align*}
But now the bottom align* is just a tiny bit to the left of the top one, which looks wierd.
\end{document}
Is there a good way to make these two aligns line up horizontally? Let me know if it's not clear what I'm going for here. I'm open to using something other than align* of course.
\intertext{Here is some text commenting on the similarity of these two sets of equations .}– karlkoeller Oct 01 '13 at 19:00&f(g(x)) = g(y)\phantom{'''} \\the second line of your firstalign*. – Steven B. Segletes Oct 01 '13 at 19:03