-9+6r=8r-7

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Solution for -9+6r=8r-7 equation: 



-9+6r=8r-7

We move all terms to the left:

-9+6r-(8r-7)=0

We get rid of parentheses

6r-8r+7-9=0

We add all the numbers together, and all the variables

-2r-2=0

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

-2r=2

r=2/-2

r=-1

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