-72=-2r-6(2r-2)

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Solution for -72=-2r-6(2r-2) equation: 



-72=-2r-6(2r-2)

We move all terms to the left:

-72-(-2r-6(2r-2))=0



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

-2r-6(2r-2)

We multiply parentheses

-2r-12r+12

We add all the numbers together, and all the variables

-14r+12

Back to the equation:

-(-14r+12)



We get rid of parentheses

14r-12-72=0

We add all the numbers together, and all the variables

14r-84=0

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

14r=84

r=84/14

r=6

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