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(8.3)R=10.2
We move all terms to the left:
(8.3)R-(10.2)=0
We add all the numbers together, and all the variables
(8.3)R-10.2=0
We multiply parentheses
8.3R-10.2=0
We move all terms containing R to the left, all other terms to the right
8.3R=10.2
R=10.2/8.3
R=1+1/4.36842105263
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