-r-6=-3r

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



-r-6=-3r

We move all terms to the left:

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

We add all the numbers together, and all the variables

-1r-(-3r)-6=0

We get rid of parentheses

-1r+3r-6=0

We add all the numbers together, and all the variables

2r-6=0

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

2r=6

r=6/2

r=3

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