-6r+9=-7r

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



-6r+9=-7r

We move all terms to the left:

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

We get rid of parentheses

-6r+7r+9=0

We add all the numbers together, and all the variables

r+9=0

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

r=-9

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