84=4(7+7b)

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



84=4(7+7b)

We move all terms to the left:

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

We add all the numbers together, and all the variables

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



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

4(7b+7)

We multiply parentheses

28b+28

Back to the equation:

-(28b+28)



We get rid of parentheses

-28b-28+84=0

We add all the numbers together, and all the variables

-28b+56=0

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

-28b=-56

b=-56/-28

b=+2

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