-9=r/13

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Solution for -9=r/13 equation: 



-9=r/13

We move all terms to the left:

-9-(r/13)=0

We add all the numbers together, and all the variables

-(+r/13)-9=0

We get rid of parentheses

-r/13-9=0

We multiply all the terms by the denominator


-r-9*13=0

We add all the numbers together, and all the variables

-1r-117=0

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

-r=117

r=117/-1

r=-117

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