Determine $x$ and $y$ such that $$\left[\begin{array}{ccc} -3& -3& 4 \cr -3& -1& -1 \end{array}\right] + \left[\begin{array}{ccc} x-y & 3 & 0 \\ 2 & x & 2 \end{array} \right] = \left[\begin{array}{ccc} -2 & 0 & 4 \\ -1 & 2 x +y & 1 \end{array}\right]$$
$x =$  
$y =$