9y-18=3y-72

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Solution for 9y-18=3y-72 equation: 



9y-18=3y-72

We move all terms to the left:

9y-18-(3y-72)=0

We get rid of parentheses

9y-3y+72-18=0

We add all the numbers together, and all the variables

6y+54=0

We move all terms containing y to the left, all other terms to the right

6y=-54

y=-54/6

y=-9

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