Problem:
Add the two matrices
$\left(
\begin{array}{cccc}
 \frac{1}{4} & -\frac{35}{4} & \frac{19}{2} & \frac{9}{2} \\
 -\frac{17}{2} & \frac{23}{4} & -\frac{37}{4} & -9 \\
 -\frac{31}{4} & -2 & 8 & \frac{17}{4} \\
 -\frac{19}{4} & \frac{19}{2} & \frac{13}{2} & -\frac{1}{2} \\
\end{array}
\right)$ and
$\left(
\begin{array}{cccc}
 \frac{7}{4} & -\frac{19}{2} & \frac{19}{4} & -\frac{17}{2} \\
 -\frac{11}{4} & \frac{15}{2} & \frac{27}{4} & -2 \\
 \frac{23}{4} & -5 & -\frac{17}{2} & 0 \\
 \frac{25}{4} & 3 & -\frac{11}{4} & -2 \\
\end{array}
\right)$
Answer:
$\left(
\begin{array}{cccc}
 2 & -\frac{73}{4} & \frac{57}{4} & -4 \\
 -\frac{45}{4} & \frac{53}{4} & -\frac{5}{2} & -11 \\
 -2 & -7 & -\frac{1}{2} & \frac{17}{4} \\
 \frac{3}{2} & \frac{25}{2} & \frac{15}{4} & -\frac{5}{2} \\
\end{array}
\right)$
{'source': 'AMPS', 'file': 'amps/mathematica/linear_algebra/add/26438.txt'}