87=3(b+12)

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Solution for 87=3(b+12) equation: 



87=3(b+12)

We move all terms to the left:

87-(3(b+12))=0



We calculate terms in parentheses: -(3(b+12)), so:

3(b+12)

We multiply parentheses

3b+36

Back to the equation:

-(3b+36)



We get rid of parentheses

-3b-36+87=0

We add all the numbers together, and all the variables

-3b+51=0

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

-3b=-51

b=-51/-3

b=+17

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