Problem:
Add the two matrices
$\left(
\begin{array}{c}
 \frac{19}{7} \\
 \frac{54}{7} \\
 -9 \\
 -\frac{19}{7} \\
\end{array}
\right)$ and
$\left(
\begin{array}{c}
 -\frac{54}{7} \\
 -\frac{67}{7} \\
 \frac{2}{7} \\
 -\frac{41}{7} \\
\end{array}
\right)$
Answer:
$\left(
\begin{array}{c}
 -5 \\
 -\frac{13}{7} \\
 -\frac{61}{7} \\
 -\frac{60}{7} \\
\end{array}
\right)$
{'source': 'AMPS', 'file': 'amps/mathematica/linear_algebra/add/11152.txt'}