-12=3r+3+3+2r

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Solution for -12=3r+3+3+2r equation: 



-12=3r+3+3+2r

We move all terms to the left:

-12-(3r+3+3+2r)=0

We add all the numbers together, and all the variables

-(5r+6)-12=0

We get rid of parentheses

-5r-6-12=0

We add all the numbers together, and all the variables

-5r-18=0

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

-5r=18

r=18/-5

r=-3+3/5

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