-11=r-(-15)

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Solution for -11=r-(-15) equation: 



-11=r-(-15)

We move all terms to the left:

-11-(r-(-15))=0



We calculate terms in parentheses: -(r-(-15)), so:

r-(-15)

We add all the numbers together, and all the variables

r+15

Back to the equation:

-(r+15)



We get rid of parentheses

-r-15-11=0

We add all the numbers together, and all the variables

-1r-26=0

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

-r=26

r=26/-1

r=-26

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