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(r-8.7)/3.6=3.722
We move all terms to the left:
(r-8.7)/3.6-(3.722)=0
We add all the numbers together, and all the variables
(r-8.7)/3.6-3.722=0
We multiply all the terms by the denominator
(r-8.7)-(3.722)*3.6=0
We add all the numbers together, and all the variables
(r-8.7)-13.3992=0
We get rid of parentheses
r-8.7-13.3992=0
We add all the numbers together, and all the variables
r-22.0992=0
We move all terms containing r to the left, all other terms to the right
r=22.0992
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