84=-3(6b-4)

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



84=-3(6b-4)

We move all terms to the left:

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



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

-3(6b-4)

We multiply parentheses

-18b+12

Back to the equation:

-(-18b+12)



We get rid of parentheses

18b-12+84=0

We add all the numbers together, and all the variables

18b+72=0

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

18b=-72

b=-72/18

b=-4

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