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8+1.20r=29.60
We move all terms to the left:
8+1.20r-(29.60)=0
We add all the numbers together, and all the variables
1.20r+8-(29.6)=0
We add all the numbers together, and all the variables
1.20r-21.6=0
We move all terms containing r to the left, all other terms to the right
1.20r=21.6
r=21.6/1.20
r=18+3.5527136788005E-15/1.20
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