2r-13=9

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Solution for 2r-13=9 equation: 



2r-13=9

We move all terms to the left:

2r-13-(9)=0

We add all the numbers together, and all the variables

2r-22=0

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

2r=22

r=22/2

r=11

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