8-4r=-8r

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



8-4r=-8r

We move all terms to the left:

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

We get rid of parentheses

-4r+8r+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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