2=-9+r/3

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Solution for 2=-9+r/3 equation: 



2=-9+r/3

We move all terms to the left:

2-(-9+r/3)=0

We add all the numbers together, and all the variables

-(r/3-9)+2=0

We get rid of parentheses

-r/3+9+2=0

We multiply all the terms by the denominator


-r+9*3+2*3=0

We add all the numbers together, and all the variables

-1r+33=0

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

-r=-33

r=-33/-1

r=+33

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