2 $\left[\begin{array}{cc}1& 3\\ 0& \mathit{x}\end{array}\right]$ + $\left[\begin{array}{cc}\mathit{y}& 0\\ 1& 2\end{array}\right]$ = $\left[\begin{array}{cc}5& 6\\ 1& 8\end{array}\right]$
$\left[\begin{array}{cc}2& 6\\ 0& 2\mathit{x}\end{array}\right]$ + $\left[\begin{array}{cc}\mathit{y}& 0\\ 1& 2\end{array}\right]$ = $\left[\begin{array}{cc}5& 6\\ 1& 8\end{array}\right]$
$\left[\begin{array}{cc}2+\mathit{y}& 6+0\\ 0+1& 2\mathit{x}+2\end{array}\right]$ = $\left[\begin{array}{cc}5& 6\\ 1& 8\end{array}\right]$
$\left[\begin{array}{cc}2+\mathit{y}& 6\\ 1& 2\left(\mathit{x}+1\right)\end{array}\right]$ = $\left[\begin{array}{cc}5& 6\\ 1& 8\end{array}\right]$
On comparing the corresponding elements of the matrices on both sides, we get:
2 + y = 5 ⇒ y = 3
2(x + 1) = 8 ⇒ x = 3