-8+2r=-2r

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Solution for -8+2r=-2r equation: 



-8+2r=-2r

We move all terms to the left:

-8+2r-(-2r)=0

We get rid of parentheses

2r+2r-8=0

We add all the numbers together, and all the variables

4r-8=0

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

4r=8

r=8/4

r=2

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