5r-13=9r+8

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Solution for 5r-13=9r+8 equation: 



5r-13=9r+8

We move all terms to the left:

5r-13-(9r+8)=0

We get rid of parentheses

5r-9r-8-13=0

We add all the numbers together, and all the variables

-4r-21=0

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

-4r=21

r=21/-4

r=-5+1/4

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