Asked by Abby

z = x-y+4
z = y-w-3
z = w-x+5

Based on the system of equations above, what is the value of z?

a) 2
b) 3
c) 4
d) 6
e) 12
Answered by Reiny
add up all 3 equations ....

3z = x-y+4 + y-w-3 + w-x+5
3z = 6
z = 2
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