3r+1=9

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Solution for 3r+1=9 equation: 



3r+1=9

We move all terms to the left:

3r+1-(9)=0

We add all the numbers together, and all the variables

3r-8=0

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

3r=8

r=8/3

r=2+2/3

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