18=6r-3r

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Solution for 18=6r-3r equation: 



18=6r-3r

We move all terms to the left:

18-(6r-3r)=0

We add all the numbers together, and all the variables

-(+3r)+18=0

We get rid of parentheses

-3r+18=0

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

-3r=-18

r=-18/-3

r=+6

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