Matrix

Problem:



Solution:

$ \left(\begin{array}{cc} 4 & -5 \\ -2 & 3\end{array}\right) + \left(\begin{array}{cc} 7 & -6 \\ 1 & -4\end{array}\right) = \left(\begin{array}{cc} 11 & -11 \\ -1 & -1\end{array}\right) $