2=-2(r-1)

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Solution for 2=-2(r-1) equation: 



2=-2(r-1)

We move all terms to the left:

2-(-2(r-1))=0



We calculate terms in parentheses: -(-2(r-1)), so:

-2(r-1)

We multiply parentheses

-2r+2

Back to the equation:

-(-2r+2)



We get rid of parentheses

2r-2+2=0

We add all the numbers together, and all the variables

2r=0

r=0/2

r=0

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