General ⇒ A simple problem with extra space in "aligning"

[aliagha]

I write the following very simple lines, and I just want to left align the equality signs in two lines. But a lot of extra space appear before the second equality sign in each line. How can I align them without having these extra spaces. Thank you very much in advance.

I tried 3 different ways and have the same problem in all:
***********************
\begin{align}
X&=X+W&=f\\
x&=x&=f_2.
\end{align}
************************
\begin{align}
X&=X+W&&=f\\
x&=x&&=f_2.
\end{align}
************************
\begin{align}
X&=X+W&=&f\\
x&=x&=&f_2.
\end{align}
***********************

[frabjous]

Perhaps alignat would be suitable?

Code: Select all

\documentclass{article}
\usepackage{amsmath}
\begin{document}
\begin{alignat}{2}
X&=X+W& &=f\\
x&=x  & &=f_2.
\end{alignat}
\end{document}

If not, then consider some kind of matrix or array environment.

[aliagha]

Thank you very much! "alignat" solved the problem.

[localghost]

Now that the problem is solved, please be so kind and mark the topic (not the last post) accordingly as clearly written in Section 3 of the Board Rules (to be read before posting). Please keep that in mind for the future so that further reminders will not be necessary.


Thorsten