-1=r-(-1)

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Solution for -1=r-(-1) equation: 



-1=r-(-1)

We move all terms to the left:

-1-(r-(-1))=0



We calculate terms in parentheses: -(r-(-1)), so:

r-(-1)

We add all the numbers together, and all the variables

r+1

Back to the equation:

-(r+1)



We get rid of parentheses

-r-1-1=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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