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Anonymous
9y+3=5y+13
4y=10
y=10/4 or 5/2 or 2.5
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(1, -1)
Y=30
-8-5y = 12-9y 9y-5y - 12+8 4y = 20 y = 5
9y
5y - 4 + 9y - 1y + 15= 5y + 9y - 1y + 15 - 4= (5 + 9 - 1)y + (15 - 4)= 13y + 9