-117=3(1-5b)

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Solution for -117=3(1-5b) equation: 



-117=3(1-5b)

We move all terms to the left:

-117-(3(1-5b))=0

We add all the numbers together, and all the variables

-(3(-5b+1))-117=0



We calculate terms in parentheses: -(3(-5b+1)), so:

3(-5b+1)

We multiply parentheses

-15b+3

Back to the equation:

-(-15b+3)



We get rid of parentheses

15b-3-117=0

We add all the numbers together, and all the variables

15b-120=0

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

15b=120

b=120/15

b=8

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