-17=2-r

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Solution for -17=2-r equation: 



-17=2-r

We move all terms to the left:

-17-(2-r)=0

We add all the numbers together, and all the variables

-(-1r+2)-17=0

We get rid of parentheses

1r-2-17=0

We add all the numbers together, and all the variables

r-19=0

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

r=19

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