Problem:
Convert the following matrix to reduced row echelon form:
$\left(
\begin{array}{ccccccc}
 -2 & -10 & 7 & -5 & 10 & 7 & -5 \\
 -2 & -8 & -10 & 0 & -5 & 9 & -6 \\
\end{array}
\right)$.
Answer:
$\left(
\begin{array}{ccccccc}
 1 & 0 & 39 & -10 & \frac{65}{2} & -\frac{17}{2} & 5 \\
 0 & 1 & -\frac{17}{2} & \frac{5}{2} & -\frac{15}{2} & 1 & -\frac{1}{2} \\
\end{array}
\right)$
{'source': 'AMPS', 'file': 'amps/mathematica/linear_algebra/row_reduce/25.txt'}