Solve this following

Question:

If $\left[\begin{array}{cc}x & 3 x-y \\ 2 x+z & 3 y-w\end{array}\right]=\left[\begin{array}{cc}3 & 2 \\ 4 & 7\end{array}\right]$, find the values of $x, y, z, w$.

Solution:

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