120=-8(3b+9)

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Solution for 120=-8(3b+9) equation: 



120=-8(3b+9)

We move all terms to the left:

120-(-8(3b+9))=0



We calculate terms in parentheses: -(-8(3b+9)), so:

-8(3b+9)

We multiply parentheses

-24b-72

Back to the equation:

-(-24b-72)



We get rid of parentheses

24b+72+120=0

We add all the numbers together, and all the variables

24b+192=0

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

24b=-192

b=-192/24

b=-8

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