18y=81+9y

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Solution for 18y=81+9y equation: 



18y=81+9y

We move all terms to the left:

18y-(81+9y)=0

We add all the numbers together, and all the variables

18y-(9y+81)=0

We get rid of parentheses

18y-9y-81=0

We add all the numbers together, and all the variables

9y-81=0

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

9y=81

y=81/9

y=9

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