-84=2(-7+7b)

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Solution for -84=2(-7+7b) equation: 



-84=2(-7+7b)

We move all terms to the left:

-84-(2(-7+7b))=0

We add all the numbers together, and all the variables

-(2(7b-7))-84=0



We calculate terms in parentheses: -(2(7b-7)), so:

2(7b-7)

We multiply parentheses

14b-14

Back to the equation:

-(14b-14)



We get rid of parentheses

-14b+14-84=0

We add all the numbers together, and all the variables

-14b-70=0

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

-14b=70

b=70/-14

b=-5

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