-3r-18=9

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Solution for -3r-18=9 equation: 



-3r-18=9

We move all terms to the left:

-3r-18-(9)=0

We add all the numbers together, and all the variables

-3r-27=0

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

-3r=27

r=27/-3

r=-9

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