Evaluate the following matrix sum: (1234)+(5678)\begin{pmatrix} 1 & 2 \\ 3 & 4 \end{pmatrix} + \begin{pmatrix} 5 & 6 \\ 7 & 8 \end{pmatrix}(1324)+(5768)
(681012)\begin{pmatrix} 6 & 8 \\ 10 & 12 \end{pmatrix}(610812)
(5122132)\begin{pmatrix} 5 & 12 \\ 21 & 32 \end{pmatrix}(5211232)
(67911)\begin{pmatrix} 6 & 7 \\ 9 & 11 \end{pmatrix}(69711)
(4444)\begin{pmatrix} 4 & 4 \\ 4 & 4 \end{pmatrix}(4444)