12b+18-15=3(2b-7)

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Solution for 12b+18-15=3(2b-7) equation: 



12b+18-15=3(2b-7)

We move all terms to the left:

12b+18-15-(3(2b-7))=0

We add all the numbers together, and all the variables

12b-(3(2b-7))+3=0



We calculate terms in parentheses: -(3(2b-7)), so:

3(2b-7)

We multiply parentheses

6b-21

Back to the equation:

-(6b-21)



We get rid of parentheses

12b-6b+21+3=0

We add all the numbers together, and all the variables

6b+24=0

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

6b=-24

b=-24/6

b=-4

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