Solve by Determinants $x-2 y+z=3$ $\begin{array}{r}2 x+2 y-3 z=9 \\2 x-3 y+z=-9\end{array}$

Short Answer

Solve by determinants: $x-2 y+z=3$
$\begin{array}{r}2 x+2 y-3 z=9 \\2 x-3 y+z=-9\end{array}$