3(b+4)=3(2b-9)

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Solution for 3(b+4)=3(2b-9) equation: 



3(b+4)=3(2b-9)

We move all terms to the left:

3(b+4)-(3(2b-9))=0

We multiply parentheses

3b-(3(2b-9))+12=0



We calculate terms in parentheses: -(3(2b-9)), so:

3(2b-9)

We multiply parentheses

6b-27

Back to the equation:

-(6b-27)



We get rid of parentheses

3b-6b+27+12=0

We add all the numbers together, and all the variables

-3b+39=0

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

-3b=-39

b=-39/-3

b=+13

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