-2=-2+r/9

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



-2=-2+r/9

We move all terms to the left:

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

We add all the numbers together, and all the variables

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

We get rid of parentheses

-r/9+2-2=0

We multiply all the terms by the denominator


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

We add all the numbers together, and all the variables

-r=0

r=0/-1

r=0

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