-9=-5+r/3

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Solution for -9=-5+r/3 equation: 



-9=-5+r/3

We move all terms to the left:

-9-(-5+r/3)=0

We add all the numbers together, and all the variables

-(r/3-5)-9=0

We get rid of parentheses

-r/3+5-9=0

We multiply all the terms by the denominator


-r+5*3-9*3=0

We add all the numbers together, and all the variables

-1r-12=0

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

-r=12

r=12/-1

r=-12

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