17=23-2r

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Solution for 17=23-2r equation: 



17=23-2r

We move all terms to the left:

17-(23-2r)=0

We add all the numbers together, and all the variables

-(-2r+23)+17=0

We get rid of parentheses

2r-23+17=0

We add all the numbers together, and all the variables

2r-6=0

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

2r=6

r=6/2

r=3

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