90=15(b+2)+(2b-9)+15

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Solution for 90=15(b+2)+(2b-9)+15 equation: 



90=15(b+2)+(2b-9)+15

We move all terms to the left:

90-(15(b+2)+(2b-9)+15)=0



We calculate terms in parentheses: -(15(b+2)+(2b-9)+15), so:

15(b+2)+(2b-9)+15

We multiply parentheses

15b+(2b-9)+30+15

We get rid of parentheses

15b+2b-9+30+15

We add all the numbers together, and all the variables

17b+36

Back to the equation:

-(17b+36)



We get rid of parentheses

-17b-36+90=0

We add all the numbers together, and all the variables

-17b+54=0

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

-17b=-54

b=-54/-17

b=3+3/17

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