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(r+2)/2+3r=3
We move all terms to the left:
(r+2)/2+3r-(3)=0
We add all the numbers together, and all the variables
3r+(r+2)/2-3=0
We multiply all the terms by the denominator
3r*2+(r+2)-3*2=0
We add all the numbers together, and all the variables
3r*2+(r+2)-6=0
Wy multiply elements
6r+(r+2)-6=0
We get rid of parentheses
6r+r+2-6=0
We add all the numbers together, and all the variables
7r-4=0
We move all terms containing r to the left, all other terms to the right
7r=4
r=4/7
r=4/7
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