Answer:
x=16 and y=7
Explanation:
This is easy. Its a systems equation.
-3x + 8y=8
3x - 9y= -15
-3x and 3x cancel out
8y plus -9y= -y
8+-15= -7
y=7
-3x+8(7)=8
-3x+56=8
-3x=-48
x=16
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