r+4=-8-2r

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Solution for r+4=-8-2r equation: 



r+4=-8-2r

We move all terms to the left:

r+4-(-8-2r)=0

We add all the numbers together, and all the variables

r-(-2r-8)+4=0

We get rid of parentheses

r+2r+8+4=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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