-3r+6+r,r=-2

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Solution for -3r+6+r,r=-2 equation: 



-3r+6+r.r=-2

We move all terms to the left:

-3r+6+r.r-(-2)=0

We add all the numbers together, and all the variables

-3r+r.r+8=0

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

-3r+r.r=-8

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