Answer:
x = -11 / z = 17
Step-by-step explanation:
A: x + z = 6
B: 3x + 2z = 1
--------------------
( x + z = 6 ) 2
( 3x + 2z = 1 ) - 1
A': 2x + 2z = 12
B': - 3x - 2z = - 1
- x = 11
x = - 11
----------
2 (- 11) + 2z = 12
-22 + 2z = 12
2z = 34
z = 17
