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9(2y-9)-(9y+5)=0
We multiply parentheses
18y-(9y+5)-81=0
We get rid of parentheses
18y-9y-5-81=0
We add all the numbers together, and all the variables
9y-86=0
We move all terms containing y to the left, all other terms to the right
9y=86
y=86/9
y=9+5/9
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