-16=r+(-9)

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Solution for -16=r+(-9) equation: 



-16=r+(-9)

We move all terms to the left:

-16-(r+(-9))=0



We calculate terms in parentheses: -(r+(-9)), so:

r+(-9)

We add all the numbers together, and all the variables

r-9

Back to the equation:

-(r-9)



We get rid of parentheses

-r+9-16=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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