Answer
$\begin{bmatrix}
9 & -6 & 12
\\
2 & 20 & 12
\end{bmatrix}$
Work Step by Step
Adding/Subtracting each corresponding elements of the matrices, the given matrix expression, $
\begin{bmatrix}
0 & -1 & 5
\\
6 & 10 & 12
\end{bmatrix}
+
\begin{bmatrix}
9 & -5 & 7
\\
-4 & 10 & 0
\end{bmatrix}
,$ results to
\begin{align*}
&
\begin{bmatrix}
0+9 & -1+(-5) & 5+7
\\
6+(-4) & 10+10 & 12+0
\end{bmatrix}
\\\\&=
\begin{bmatrix}
0+9 & -1-5 & 5+7
\\
6-4 & 10+10 & 12+0
\end{bmatrix}
\\\\&=
\begin{bmatrix}
9 & -6 & 12
\\
2 & 20 & 12
\end{bmatrix}
.\end{align*}
Hence, the given matrix operation results to $
\begin{bmatrix}
9 & -6 & 12
\\
2 & 20 & 12
\end{bmatrix}
.$
