title: trouble in using flalign (LaTeX)
body: <p>I am trying to put 3 equations with "=" signs aligned but also left aligned. I tried the following:</p>
  
  <pre><code>\documentclass{article}
  \usepackage{amsmath}
  \begin{document}
  
  \begin{flalign*}
  RPC &amp;= A+B\tilde{f} +C x  &amp;\\
  A   &amp;= a+\eta             &amp;\\
  E   &amp;= cte                &amp;
  \end{flalign*}
  
  \end{document}
  </code></pre>
  
  <p>With this I get the stuff in the left and the "=" signs aligned. However, I also need A (in the second equation) and E (in the third equation) to be aligned to the R (in the first one)</p>
  
  <p>Does anyone know how to get it?</p>
  
  <p>thanks</p>