(b+7)=(2b+8)=90

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Solution for (b+7)=(2b+8)=90 equation: 



(b+7)=(2b+8)=90

We move all terms to the left:

(b+7)-((2b+8))=0

We get rid of parentheses

b-((2b+8))+7=0



We calculate terms in parentheses: -((2b+8)), so:

(2b+8)

We get rid of parentheses

2b+8

Back to the equation:

-(2b+8)



We get rid of parentheses

b-2b-8+7=0

We add all the numbers together, and all the variables

-1b-1=0

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

-b=1

b=1/-1

b=-1

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