Problem:
Add the two matrices
$\left(
\begin{array}{c}
 -\frac{81}{16} \\
 \frac{13}{4} \\
\end{array}
\right)$ and
$\left(
\begin{array}{c}
 \frac{3}{4} \\
 -\frac{7}{4} \\
\end{array}
\right)$
Answer:
$\left(
\begin{array}{c}
 -\frac{69}{16} \\
 \frac{3}{2} \\
\end{array}
\right)$
{'source': 'AMPS', 'file': 'amps/mathematica/linear_algebra/add/8621.txt'}