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

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



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

We move all terms to the left:

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

We add all the numbers together, and all the variables

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



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

-3(-3b+4)

We multiply parentheses

9b-12

Back to the equation:

-(9b-12)



We get rid of parentheses

-7b-9b+12=0

We add all the numbers together, and all the variables

-16b+12=0

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

-16b=-12

b=-12/-16

b=3/4

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