<html><head><meta name="color-scheme" content="light dark"></head><body><pre style="word-wrap: break-word; white-space: pre-wrap;">\documentclass{article}
\usepackage{amsmath} % pkg required by EasyLatex
\usepackage{amsfonts} % pkg required by EasyLatex
\usepackage{amssymb} % pkg required by EasyLatex
\usepackage{psfrag} % pkg required by EasyLatex
\usepackage[dvips]{graphicx} % pkg required by EasyLatex

\begin{document}

\begin{align}
1 + 1 &amp;= 2
\\1 &amp;= 2 - 1
\\0 &amp;= 2 - 1 - 1
\\0 &amp;= 2 - 2
\end{align}

\end{document}
</pre></body></html>