9r+6=30r+9

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Solution for 9r+6=30r+9 equation: 



9r+6=30r+9

We move all terms to the left:

9r+6-(30r+9)=0

We get rid of parentheses

9r-30r-9+6=0

We add all the numbers together, and all the variables

-21r-3=0

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

-21r=3

r=3/-21

r=-1/7

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