-120=6(-5+3r)

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Solution for -120=6(-5+3r) equation: 



-120=6(-5+3r)

We move all terms to the left:

-120-(6(-5+3r))=0

We add all the numbers together, and all the variables

-(6(3r-5))-120=0



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

6(3r-5)

We multiply parentheses

18r-30

Back to the equation:

-(18r-30)



We get rid of parentheses

-18r+30-120=0

We add all the numbers together, and all the variables

-18r-90=0

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

-18r=90

r=90/-18

r=-5

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