(-4)=r-(-1)

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Solution for (-4)=r-(-1) equation: 



(-4)=r-(-1)

We move all terms to the left:

(-4)-(r-(-1))=0

We add all the numbers together, and all the variables

-(r-(-1))-4=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-1-4=0

We add all the numbers together, and all the variables

-1r-5=0

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

-r=5

r=5/-1

r=-5

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