8=-2(r+2)

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Solution for 8=-2(r+2) equation: 



8=-2(r+2)

We move all terms to the left:

8-(-2(r+2))=0



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

-2(r+2)

We multiply parentheses

-2r-4

Back to the equation:

-(-2r-4)



We get rid of parentheses

2r+4+8=0

We add all the numbers together, and all the variables

2r+12=0

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

2r=-12

r=-12/2

r=-6

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