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-8.9r+16.62+19r=7.6r-18.13
We move all terms to the left:
-8.9r+16.62+19r-(7.6r-18.13)=0
We add all the numbers together, and all the variables
10.1r-(7.6r-18.13)+16.62=0
We get rid of parentheses
10.1r-7.6r+18.13+16.62=0
We add all the numbers together, and all the variables
2.5r+34.75=0
We move all terms containing r to the left, all other terms to the right
2.5r=-34.75
r=-34.75/2.5
r=-13+1/1.1111111111111
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