Problem:
Multiply the scalar $\frac{12}{5}$ and the matrix
$\left(
\begin{array}{cc}
 -9 & 7 \\
 7 & 2 \\
 4 & 3 \\
 -2 & -7 \\
\end{array}
\right)$.
Answer:
$\left(
\begin{array}{cc}
 -\frac{108}{5} & \frac{84}{5} \\
 \frac{84}{5} & \frac{24}{5} \\
 \frac{48}{5} & \frac{36}{5} \\
 -\frac{24}{5} & -\frac{84}{5} \\
\end{array}
\right)$
{'source': 'AMPS', 'file': 'amps/mathematica/linear_algebra/multiply_by_scalar/1696.txt'}