-117=3(1+8r)

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Solution for -117=3(1+8r) equation: 



-117=3(1+8r)

We move all terms to the left:

-117-(3(1+8r))=0

We add all the numbers together, and all the variables

-(3(8r+1))-117=0



We calculate terms in parentheses: -(3(8r+1)), so:

3(8r+1)

We multiply parentheses

24r+3

Back to the equation:

-(24r+3)



We get rid of parentheses

-24r-3-117=0

We add all the numbers together, and all the variables

-24r-120=0

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

-24r=120

r=120/-24

r=-5

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