86=-7r+2(-4-2)

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Solution for 86=-7r+2(-4-2) equation: 



86=-7r+2(-4-2)

We move all terms to the left:

86-(-7r+2(-4-2))=0

We add all the numbers together, and all the variables

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



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

-7r+2(-6)

We add all the numbers together, and all the variables

-7r-12

Back to the equation:

-(-7r-12)



We get rid of parentheses

7r+12+86=0

We add all the numbers together, and all the variables

7r+98=0

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

7r=-98

r=-98/7

r=-14

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