# ( <mtable rowspacing="4pt" columnspacing="1em"> <mtr> <mtd> 6

$\left(\begin{array}{cc}6& 7\\ -4& -6\end{array}\right)+\left(\begin{array}{cc}4& 5\\ -2& -5\end{array}\right)=$ ?
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$\left[\begin{array}{cc}6+4& 7+5\\ -4-2& -6-5\end{array}\right]$

Simplify each element of the matrix $\left[\begin{array}{cc}6+4& 7+5\\ -4-2& -6-5\end{array}\right]$.

$\left[\begin{array}{cc}10& 12\\ -6& -11\end{array}\right]$