Answer
the solution of this system is $(5 , -3 , 0)$
Work Step by Step
System ${x-y+6z=8 ,
x+z=5 ,
x+3y -14=-4}$
Augmented matrix
$\lceil$1 -1 6 8$\rceil$
$ |1 0 1 5 |$
$\lfloor$1 3 -14 -4$\rfloor$