Solve $x+2 y-z=4$ $\begin{aligned}& 2 x-y-3 z=-19 \\& x+5 y+2 z=25\end{aligned}$

Short Answer

Solve: $x+2 y-z=4$
$\begin{aligned}& 2 x-y-3 z=-19 \\& x+5 y+2 z=25\end{aligned}$