3r-4=9

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Solution for 3r-4=9 equation: 



3r-4=9

We move all terms to the left:

3r-4-(9)=0

We add all the numbers together, and all the variables

3r-13=0

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

3r=13

r=13/3

r=4+1/3

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