15r-17=13r-11

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Solution for 15r-17=13r-11 equation: 



15r-17=13r-11

We move all terms to the left:

15r-17-(13r-11)=0

We get rid of parentheses

15r-13r+11-17=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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