Answer
$x=12$
$y=2$
$z=3$
Work Step by Step
A matrix of order $m\times n$ has $m$ rows and $n$ columns.
Two matrices are equal if and only if they have the same order and corresponding elements are equal.
row 1, column 1:
$x=12$
row 1, column 2:
$y+3=5$
$y=2$
row 2, column 1:
$2z=6$
$z=3$
