r=6-2r

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Solution for r=6-2r equation: 



r=6-2r

We move all terms to the left:

r-(6-2r)=0

We add all the numbers together, and all the variables

r-(-2r+6)=0

We get rid of parentheses

r+2r-6=0

We add all the numbers together, and all the variables

3r-6=0

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

3r=6

r=6/3

r=2

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