-12=-2(r+5)

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Solution for -12=-2(r+5) equation: 



-12=-2(r+5)

We move all terms to the left:

-12-(-2(r+5))=0



We calculate terms in parentheses: -(-2(r+5)), so:

-2(r+5)

We multiply parentheses

-2r-10

Back to the equation:

-(-2r-10)



We get rid of parentheses

2r+10-12=0

We add all the numbers together, and all the variables

2r-2=0

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

2r=2

r=2/2

r=1

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