-102=-6(5+3r)

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Solution for -102=-6(5+3r) equation: 



-102=-6(5+3r)

We move all terms to the left:

-102-(-6(5+3r))=0

We add all the numbers together, and all the variables

-(-6(3r+5))-102=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+30-102=0

We add all the numbers together, and all the variables

18r-72=0

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

18r=72

r=72/18

r=4

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