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5r+15/20=3r-18/3
We move all terms to the left:
5r+15/20-(3r-18/3)=0
We add all the numbers together, and all the variables
5r-(3r-6)+15/20=0
We get rid of parentheses
5r-3r+6+15/20=0
We multiply all the terms by the denominator
5r*20-3r*20+15+6*20=0
We add all the numbers together, and all the variables
5r*20-3r*20+135=0
Wy multiply elements
100r-60r+135=0
We add all the numbers together, and all the variables
40r+135=0
We move all terms containing r to the left, all other terms to the right
40r=-135
r=-135/40
r=-3+3/8
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