17r-2r-20+15-18=-2

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Solution for 17r-2r-20+15-18=-2 equation: 



17r-2r-20+15-18=-2

We move all terms to the left:

17r-2r-20+15-18-(-2)=0

We add all the numbers together, and all the variables

15r-21=0

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

15r=21

r=21/15

r=1+2/5

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