Problem:
Multiply the scalar $-\frac{8}{9}$ and the matrix
$\left(
\begin{array}{cc}
 2 & 2 \\
 -7 & -3 \\
 10 & 6 \\
 10 & -5 \\
\end{array}
\right)$.
Answer:
$\left(
\begin{array}{cc}
 -\frac{16}{9} & -\frac{16}{9} \\
 \frac{56}{9} & \frac{8}{3} \\
 -\frac{80}{9} & -\frac{16}{3} \\
 -\frac{80}{9} & \frac{40}{9} \\
\end{array}
\right)$
{'source': 'AMPS', 'file': 'amps/mathematica/linear_algebra/multiply_by_scalar/37885.txt'}