title: aligned equations with mathjax, and with equation numbers
body: <p>I would like to write a series of numbered equations aligned at the equality sign. Like the usual <code>.. math::</code> with multiple equations, but wrapped in <code>\begin{align} ... \end{align}</code>  rather than <code>\begin{equation} ... \end{equation}</code>. Is there a way to do that with sphinx? Or perhaps an extension?</p>
  
  <p><strong>EDIT:</strong> I need equation numbers so that I can refer to those from the main text using the <code>:ref:</code> role.</p>