-84=-8-4(3b+7)

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Solution for -84=-8-4(3b+7) equation: 



-84=-8-4(3b+7)

We move all terms to the left:

-84-(-8-4(3b+7))=0



We calculate terms in parentheses: -(-8-4(3b+7)), so:

-8-4(3b+7)

determiningTheFunctionDomain
-4(3b+7)-8

We multiply parentheses

-12b-28-8

We add all the numbers together, and all the variables

-12b-36

Back to the equation:

-(-12b-36)



We get rid of parentheses

12b+36-84=0

We add all the numbers together, and all the variables

12b-48=0

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

12b=48

b=48/12

b=4

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