-15=r/9

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Solution for -15=r/9 equation: 



-15=r/9

We move all terms to the left:

-15-(r/9)=0

We add all the numbers together, and all the variables

-(+r/9)-15=0

We get rid of parentheses

-r/9-15=0

We multiply all the terms by the denominator


-r-15*9=0

We add all the numbers together, and all the variables

-1r-135=0

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

-r=135

r=135/-1

r=-135

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