Subtract the following matrices.

$\left[\begin{array}{cc}-2& -9\\ 9& -7\\ 0& -1\end{array}\right]-\left[\begin{array}{cc}8& -7\\ 6& 6\\ -9& -7\end{array}\right]$

$\left[\begin{array}{cc}-2& -9\\ 9& -7\\ 0& -1\end{array}\right]-\left[\begin{array}{cc}8& -7\\ 6& 6\\ -9& -7\end{array}\right]$