Answer
$\left[\begin{matrix}
-12&-3 &0\\
6& -9 &6
\end{matrix}\right]$
Work Step by Step
The given matrix is
$B=\left[\begin{matrix}
4& 1 &0\\
-2& 3 &-2
\end{matrix}\right]$
Multiply both sides by $-3$.
$-3B=-3\left[\begin{matrix}
4& 1 &0\\
-2& 3 &-2
\end{matrix}\right]$
Multiply each element by $-3$.
$-3B=\left[\begin{matrix}
-3\cdot 4&-3\cdot 1 &-3\cdot 0\\
-3\cdot (-2)& -3\cdot 3 &-3\cdot (-2)
\end{matrix}\right]$
Simplify.
$-3B=\left[\begin{matrix}
-12&-3 &0\\
6& -9 &6
\end{matrix}\right]$.
