11=r-(-4)

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Solution for 11=r-(-4) equation: 



11=r-(-4)

We move all terms to the left:

11-(r-(-4))=0



We calculate terms in parentheses: -(r-(-4)), so:

r-(-4)

We add all the numbers together, and all the variables

r+4

Back to the equation:

-(r+4)



We get rid of parentheses

-r-4+11=0

We add all the numbers together, and all the variables

-1r+7=0

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

-r=-7

r=-7/-1

r=+7

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