r+2r-13=25

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Solution for r+2r-13=25 equation: 



r+2r-13=25

We move all terms to the left:

r+2r-13-(25)=0

We add all the numbers together, and all the variables

3r-38=0

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

3r=38

r=38/3

r=12+2/3

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