Problem:
Subtract the second matrix from the first:
$\left(
\begin{array}{cccc}
 -6 & -2 & 4 & -9 \\
\end{array}
\right)$
$\left(
\begin{array}{cccc}
 10 & -5 & 6 & 7 \\
\end{array}
\right)$
Answer:
$\left(
\begin{array}{cccc}
 -16 & 3 & -2 & -16 \\
\end{array}
\right)$
{'source': 'AMPS', 'file': 'amps/mathematica/linear_algebra/subtract/5084.txt'}