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1.5r+15r=2.25r
We move all terms to the left:
1.5r+15r-(2.25r)=0
We add all the numbers together, and all the variables
1.5r+15r-(+2.25r)=0
We add all the numbers together, and all the variables
16.5r-(+2.25r)=0
We get rid of parentheses
16.5r-2.25r=0
We add all the numbers together, and all the variables
14.25r=0
r=0/14.25
r=0
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