-90=-5(3b+6)+5b

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Solution for -90=-5(3b+6)+5b equation: 



-90=-5(3b+6)+5b

We move all terms to the left:

-90-(-5(3b+6)+5b)=0



We calculate terms in parentheses: -(-5(3b+6)+5b), so:

-5(3b+6)+5b

We add all the numbers together, and all the variables

5b-5(3b+6)

We multiply parentheses

5b-15b-30

We add all the numbers together, and all the variables

-10b-30

Back to the equation:

-(-10b-30)



We get rid of parentheses

10b+30-90=0

We add all the numbers together, and all the variables

10b-60=0

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

10b=60

b=60/10

b=6

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