Problem:
Multiply
$\left(
\begin{array}{cccc}
 1 & -\frac{8}{3} & -3 & \frac{1}{2} \\
 \frac{13}{6} & \frac{7}{3} & 0 & -\frac{5}{6} \\
 -1 & 2 & \frac{11}{6} & 1 \\
\end{array}
\right)$ and
$\left(
\begin{array}{c}
 -\frac{1}{6} \\
 \frac{5}{3} \\
 1 \\
 \frac{2}{3} \\
\end{array}
\right)$.
Answer:
$\left(
\begin{array}{c}
 -\frac{131}{18} \\
 \frac{107}{36} \\
 6 \\
\end{array}
\right)$
{'source': 'AMPS', 'file': 'amps/mathematica/linear_algebra/multiply/19467.txt'}