Answer
$\begin{bmatrix}-6 & -9\\-4 & -7\end{bmatrix}$
Work Step by Step
We have $3D-2A=3\begin{bmatrix}0 & -3\\-2 & 1\end{bmatrix}-2\begin{bmatrix}3 & 0\\-1 & 5\end{bmatrix}$
$=\begin{bmatrix}0-6 & -9-0\\-6+2 & 3-10\end{bmatrix}$
After simplification, we get:
$=\begin{bmatrix}-6 & -9\\-4 & -7\end{bmatrix}$