9=-3r-6r

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Solution for 9=-3r-6r equation: 



9=-3r-6r

We move all terms to the left:

9-(-3r-6r)=0

We add all the numbers together, and all the variables

-(-9r)+9=0

We get rid of parentheses

9r+9=0

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

9r=-9

r=-9/9

r=-1

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