Solve the System $\left(\begin{array}{rl}2 x+4 y-z & =-20 \\4 x-5 y+5 z & =53 \\3 x+y-2 z & =-7\end{array}\right)$

Short Answer

Solve the system. $\left(\begin{array}{rl}2 x+4 y-z & =-20 \\4 x-5 y+5 z & =53 \\3 x+y-2 z & =-7\end{array}\right)$