-(r+-3)=9

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Solution for -(r+-3)=9 equation: 



-(r+-3)=9

We move all terms to the left:

-(r+-3)-(9)=0

We add all the numbers together, and all the variables

-(r-3)-9=0

We get rid of parentheses

-r+3-9=0

We add all the numbers together, and all the variables

-1r-6=0

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

-r=6

r=6/-1

r=-6

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