-120=-3(-8+8r)

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



-120=-3(-8+8r)

We move all terms to the left:

-120-(-3(-8+8r))=0

We add all the numbers together, and all the variables

-(-3(8r-8))-120=0



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

-3(8r-8)

We multiply parentheses

-24r+24

Back to the equation:

-(-24r+24)



We get rid of parentheses

24r-24-120=0

We add all the numbers together, and all the variables

24r-144=0

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

24r=144

r=144/24

r=6

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