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+%%
+%% An UIT Edition example
+%%
+%% Example 10-09-11 on page 221.
+%%
+%% Copyright (C) 2010 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.
+%%
+%%
+%% ====
+% Show page(s) 1
+%%
+\documentclass[]{exaarticle}
+\pagestyle{empty}
+\setlength\textwidth{177.70511pt}
+\AtBeginDocument{\setlength\parindent{0pt}}
+\StartShownPreambleCommands
+\usepackage{amsmath}
+\StopShownPreambleCommands
+\begin{document}
+\begin{align*}
+ (x^{5}+x^{2}):(x^{3}+x^{2}) &= x^{2}-x+1\\
+ \underline{{-(x^{5}+x^{4})}}\hspace{9ex}\\
+ -x^{4}+x^{2}\hspace{5ex}\\
+ \underline{{-(-x^{4}-x^{3})}}\hspace{4.5ex}\\
+ x^{3}+x^{2}\hspace{1.5ex}\\
+ \underline{{-(x^{3}+x^{2})}\hspace{1ex}}\\
+ 0\hspace{5ex}
+\end{align*}
+\end{document}