-2=2(r+3)

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Solution for -2=2(r+3) equation: 



-2=2(r+3)

We move all terms to the left:

-2-(2(r+3))=0



We calculate terms in parentheses: -(2(r+3)), so:

2(r+3)

We multiply parentheses

2r+6

Back to the equation:

-(2r+6)



We get rid of parentheses

-2r-6-2=0

We add all the numbers together, and all the variables

-2r-8=0

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

-2r=8

r=8/-2

r=-4

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