(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)-(90)=0

We get rid of parentheses

b+2b+7+8-90=0

We add all the numbers together, and all the variables

3b-75=0

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

3b=75

b=75/3

b=25

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