-(r+2)=0

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Solution for -(r+2)=0 equation: 



-(r+2)=0

We get rid of parentheses

-r-2=0

We add all the numbers together, and all the variables

-1r-2=0

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

-r=2

r=2/-1

r=-2

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