84=6(-7r-7)

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Solution for 84=6(-7r-7) equation: 



84=6(-7r-7)

We move all terms to the left:

84-(6(-7r-7))=0



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

6(-7r-7)

We multiply parentheses

-42r-42

Back to the equation:

-(-42r-42)



We get rid of parentheses

42r+42+84=0

We add all the numbers together, and all the variables

42r+126=0

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

42r=-126

r=-126/42

r=-3

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