r+12=-4r+2r

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Solution for r+12=-4r+2r equation: 



r+12=-4r+2r

We move all terms to the left:

r+12-(-4r+2r)=0

We add all the numbers together, and all the variables

r-(-2r)+12=0

We get rid of parentheses

r+2r+12=0

We add all the numbers together, and all the variables

3r+12=0

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

3r=-12

r=-12/3

r=-4

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