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5.8(12.1r-9.7)=54.3
We move all terms to the left:
5.8(12.1r-9.7)-(54.3)=0
We add all the numbers together, and all the variables
5.8(12.1r-9.7)-54.3=0
We multiply parentheses
69.6r-56.26-54.3=0
We add all the numbers together, and all the variables
69.6r-110.56=0
We move all terms containing r to the left, all other terms to the right
69.6r=110.56
r=110.56/69.6
r=1+20.8979591837/35.5102040816
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