Answer:
x = -1
y = -5
Step-by-step explanation:
9(2y+9) - 8y = 31
18y + 81 - 8y = 31
10y + 81 = 31
10y = -50
2(-5) + 9 = x
-10 + 9 = x
-1 = x
I have solve it in above picture
