Here is my first attempt (which was an abysmal failure):
Code: Select all
\documentclass[12pt]{article}
\begin{document}
\begin{center}
\begin{minipage}{2cm}
{}
\end{minipage}
%
\begin{minipage}{1.4in}
\[
\left(\begin{array}{ccc|c}
2&6&1&7\\
1&2&-1&-1\\
5&7&-4&9\end{array}\right)
\]
\end{minipage}
%
\begin{minipage}{2cm}
\begin{center}
$R_{12}$ \\
$\Longrightarrow$
\end{center}
\end{minipage}
%
\begin{minipage}{1.4in}
\[
\left(\begin{array}{ccc|c}
1&2&-1&-1\\
2&6&1&7\\
5&7&-4&9\end{array}\right)
\]
\end{minipage} \\
%
%
\begin{minipage}{2cm}
\begin{center}
$-2R_{1}+R_2$\\
$-5R_1+R_3$\\
$\Longrightarrow$
\end{center}
\end{minipage}
%
\begin{minipage}{1.4in}
\[
\left(\begin{array}{ccc|c}
1&2&-1&-1\\
0&2&3&9\\
0&-3&1&14\end{array}\right)
\]
\end{minipage}
%
\begin{minipage}{2cm}
\begin{center}
$\frac{1}{2} R_{2}$ \\
$\Longrightarrow$
\end{center}
\end{minipage}
%
\begin{minipage}{1.4in}
\[
\left(\begin{array}{ccc|c}
1&2&-1&-1\\
0&1&\frac{3}{2}&\frac{9}{2}\\
0&-3&1&14\end{array}\right)
\]
\end{minipage}\end{center}
\end{document}
Thanks!