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5r+30/20=2r-6/2
We move all terms to the left:
5r+30/20-(2r-6/2)=0
We add all the numbers together, and all the variables
5r-(2r-3)+30/20=0
We get rid of parentheses
5r-2r+3+30/20=0
We multiply all the terms by the denominator
5r*20-2r*20+30+3*20=0
We add all the numbers together, and all the variables
5r*20-2r*20+90=0
Wy multiply elements
100r-40r+90=0
We add all the numbers together, and all the variables
60r+90=0
We move all terms containing r to the left, all other terms to the right
60r=-90
r=-90/60
r=-1+1/2
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