7b=3(b+4)

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Solution for 7b=3(b+4) equation: 



7b=3(b+4)

We move all terms to the left:

7b-(3(b+4))=0



We calculate terms in parentheses: -(3(b+4)), so:

3(b+4)

We multiply parentheses

3b+12

Back to the equation:

-(3b+12)



We get rid of parentheses

7b-3b-12=0

We add all the numbers together, and all the variables

4b-12=0

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

4b=12

b=12/4

b=3

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