Answer
$$\begin{pmatrix}2&-6\\ 19&2\end{pmatrix}$$
Work Step by Step
Using the rules of matrices in order to solve, we find:
$$\begin{pmatrix}\left(-7\right)-\left(-9\right)&11-17\\ 6-\left(-13\right)&3-1\end{pmatrix} \\ \begin{pmatrix}2&-6\\ 19&2\end{pmatrix}$$
