4r-13=2r+9

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Solution for 4r-13=2r+9 equation: 



4r-13=2r+9

We move all terms to the left:

4r-13-(2r+9)=0

We get rid of parentheses

4r-2r-9-13=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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