9-7r=-7

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Solution for 9-7r=-7 equation: 



9-7r=-7

We move all terms to the left:

9-7r-(-7)=0

We add all the numbers together, and all the variables

-7r+16=0

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

-7r=-16

r=-16/-7

r=2+2/7

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