12y=81+3y

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Solution for 12y=81+3y equation: 



12y=81+3y

We move all terms to the left:

12y-(81+3y)=0

We add all the numbers together, and all the variables

12y-(3y+81)=0

We get rid of parentheses

12y-3y-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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