90=4(b-7)

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Solution for 90=4(b-7) equation: 



90=4(b-7)

We move all terms to the left:

90-(4(b-7))=0



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

4(b-7)

We multiply parentheses

4b-28

Back to the equation:

-(4b-28)



We get rid of parentheses

-4b+28+90=0

We add all the numbers together, and all the variables

-4b+118=0

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

-4b=-118

b=-118/-4

b=29+1/2

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