-102=-6(r+7)-6r

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Solution for -102=-6(r+7)-6r equation: 



-102=-6(r+7)-6r

We move all terms to the left:

-102-(-6(r+7)-6r)=0



We calculate terms in parentheses: -(-6(r+7)-6r), so:

-6(r+7)-6r

We add all the numbers together, and all the variables

-6r-6(r+7)

We multiply parentheses

-6r-6r-42

We add all the numbers together, and all the variables

-12r-42

Back to the equation:

-(-12r-42)



We get rid of parentheses

12r+42-102=0

We add all the numbers together, and all the variables

12r-60=0

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

12r=60

r=60/12

r=5

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