<html><head><meta name="color-scheme" content="light dark"></head><body><pre style="word-wrap: break-word; white-space: pre-wrap;">%%
%% The LaTeX Companion, 3ed
%%
%% Example 11-2-20 on page II-141 in "Display environments as mini-pages".
%%
%% Copyright (C) 2022 Frank Mittelbach
%%
%% It may be distributed and/or modified under the conditions
%% of the LaTeX Project Public License, either version 1.3c
%% of this license or (at your option) any later version.
%%
%% See https://www.latex-project.org/lppl.txt for details.
%%

\documentclass{tlc3examargin}
\pagestyle{empty}
\setcounter{page}{6}
\setlength\textwidth{231.0pt}

%StartShownPreambleCommands
\usepackage{amsmath}
%StopShownPreambleCommands

\begin{document}
\renewcommand\minalignsep{5pt}
\begin{equation} \begin{aligned}
  V_j &amp;= v_j                      &amp;
  X_i &amp;= x_i - q_i x_j            &amp;
      &amp;= u_j + \sum_{i\ne j} q_i \\
  V_i &amp;= v_i - q_i v_j            &amp;
  X_j &amp;= x_j                      &amp;
  U_i &amp;= u_i
\end{aligned} \end{equation}
\end{document}
</pre></body></html>