-86=2(6r-7)

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Solution for -86=2(6r-7) equation: 



-86=2(6r-7)

We move all terms to the left:

-86-(2(6r-7))=0



We calculate terms in parentheses: -(2(6r-7)), so:

2(6r-7)

We multiply parentheses

12r-14

Back to the equation:

-(12r-14)



We get rid of parentheses

-12r+14-86=0

We add all the numbers together, and all the variables

-12r-72=0

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

-12r=72

r=72/-12

r=-6

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