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4r+12/16=3r-9/3
We move all terms to the left:
4r+12/16-(3r-9/3)=0
We add all the numbers together, and all the variables
4r-(3r-3)+12/16=0
We get rid of parentheses
4r-3r+3+12/16=0
We multiply all the terms by the denominator
4r*16-3r*16+12+3*16=0
We add all the numbers together, and all the variables
4r*16-3r*16+60=0
Wy multiply elements
64r-48r+60=0
We add all the numbers together, and all the variables
16r+60=0
We move all terms containing r to the left, all other terms to the right
16r=-60
r=-60/16
r=-3+3/4
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