12=(b+3)

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Solution for 12=(b+3) equation: 



12=(b+3)

We move all terms to the left:

12-((b+3))=0



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

(b+3)

We get rid of parentheses

b+3

Back to the equation:

-(b+3)



We get rid of parentheses

-b-3+12=0

We add all the numbers together, and all the variables

-1b+9=0

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

-b=-9

b=-9/-1

b=+9

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