-19=r+(-1)

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Solution for -19=r+(-1) equation: 



-19=r+(-1)

We move all terms to the left:

-19-(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+1-19=0

We add all the numbers together, and all the variables

-1r-18=0

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

-r=18

r=18/-1

r=-18

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