Answer:
x - z = -36
Step-by-step explanation:
Given:
x + y y + z
---------- = 32 and ---------- = 50
2 2
These lead to x + y = 64 and y + z = 100
Subtracting the second equation from the first yields:
x + y = 64
-( y + z = 100)
------------------------
x - z = -36
