<html><head><meta name="color-scheme" content="light dark"></head><body><pre style="word-wrap: break-word; white-space: pre-wrap;">%% 
%%  Der Mathematiksatz mit LaTeX, 1. Auflage 2009
%% 
%%  Example 6-20-1 on page 131.
%% 
%%  Copyright (C) 2009 Herbert Voss
%% 
%%  It may be distributed and/or modified under the conditions
%%  of the LaTeX Project Public License, either version 1.3
%%  of this license or (at your option) any later version.
%% 
%%  See http://www.latex-project.org/lppl.txt for details.
%% 

\documentclass[]{ttctexa}
\pagestyle{empty}
\setcounter{page}{6}
\setlength\textwidth{355.65944pt}
\AtBeginDocument{\setlength\parindent{0pt}}
\StartShownPreambleCommands
\usepackage{amsmath,calc}
\StopShownPreambleCommands
\begin{document}
\setlength\fboxsep{0pt}
\setlength\abovedisplayskip{10pt}\setlength\belowdisplayskip{10pt}
\fbox{\parbox{\linewidth}{\setlength\fboxsep{5pt}%
\begin{xalignat*}{2}
\framebox[0.125\columnwidth]{xalignat} &amp;= \framebox[0.125\columnwidth]{x} &amp; \framebox[0.125\columnwidth]{x} &amp;= \framebox[0.125\columnwidth]{x}\\
\framebox[0.125\columnwidth]{xalignat} &amp;= \framebox[0.1\columnwidth]{x} &amp; \framebox[0.1\columnwidth]{x} &amp;= \framebox[0.1\columnwidth]{x}
\end{xalignat*}}}
\end{document}
</pre></body></html>