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5r+45/20=2r-18/2
We move all terms to the left:
5r+45/20-(2r-18/2)=0
We add all the numbers together, and all the variables
5r-(2r-9)+45/20=0
We get rid of parentheses
5r-2r+9+45/20=0
We multiply all the terms by the denominator
5r*20-2r*20+45+9*20=0
We add all the numbers together, and all the variables
5r*20-2r*20+225=0
Wy multiply elements
100r-40r+225=0
We add all the numbers together, and all the variables
60r+225=0
We move all terms containing r to the left, all other terms to the right
60r=-225
r=-225/60
r=-3+3/4
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