Answer
$x=-50, y=-6, z=1$
Work Step by Step
Write the system of equations corresponding to the augmented matrix as follows:
$x-8y=-2 \\ y-z =-7 \\ z=1$
Substitute the value of $z=1$ in $y-z=-7$ to obtain:
$y-1=-7 \implies y=-6$
Now, $x-8(-6)=-2 \implies x=-50$
Therefore, $x=-50, y=-6, z=1$
