-7=r/(-9)

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Solution for -7=r/(-9) equation: 



-7=r/(-9)

We move all terms to the left:

-7-(r/(-9))=0

We multiply all the terms by the denominator


-(r-7*(-9))=0



We calculate terms in parentheses: -(r-7*(-9)), so:

r-7*(-9)

We add all the numbers together, and all the variables

r+63

Back to the equation:

-(r+63)



We get rid of parentheses

-r-63=0

We add all the numbers together, and all the variables

-1r-63=0

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

-r=63

r=63/-1

r=-63

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