5=-5+-2r

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Solution for 5=-5+-2r equation: 



5=-5+-2r

We move all terms to the left:

5-(-5+-2r)=0

We add all the numbers together, and all the variables

-(-2r)+5=0

We get rid of parentheses

2r+5=0

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

2r=-5

r=-5/2

r=-2+1/2

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