%% 
%% This is file, `file.tex',
%% generated with the extract package.
%% 
%% Generated on :  2016/10/26,16:33
%% From source  :  Minimal.tex
%% Using options:  active,generate=file,extract-env={align,equation}
%% 
\documentclass[english]{article}

\begin{document}

\begin{align}
\alpha & +5
\end{align}

\end{document}