84=-4(-3b-6)

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Solution for 84=-4(-3b-6) equation: 



84=-4(-3b-6)

We move all terms to the left:

84-(-4(-3b-6))=0



We calculate terms in parentheses: -(-4(-3b-6)), so:

-4(-3b-6)

We multiply parentheses

12b+24

Back to the equation:

-(12b+24)



We get rid of parentheses

-12b-24+84=0

We add all the numbers together, and all the variables

-12b+60=0

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

-12b=-60

b=-60/-12

b=+5

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