9r-8-3r=20

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Solution for 9r-8-3r=20 equation: 



9r-8-3r=20

We move all terms to the left:

9r-8-3r-(20)=0

We add all the numbers together, and all the variables

6r-28=0

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

6r=28

r=28/6

r=4+2/3

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