Answer:
Check the above photo and do the sum
x+-12=18 :)
Step-by-step explanation:
I hope this helps!
C) x=2 y=-1 z=3
2x + y - z = 0
2(2) + (-1) - (3) = 0
0 = 0
x - y + z =6
2 - (-1) + 3 = 6
6 = 6
x + 2y + z = 3
2 + 2(-1) + 3 = 3
3 = 3
