12b=3b+81

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Solution for 12b=3b+81 equation: 



12b=3b+81

We move all terms to the left:

12b-(3b+81)=0

We get rid of parentheses

12b-3b-81=0

We add all the numbers together, and all the variables

9b-81=0

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

9b=81

b=81/9

b=9

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