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4.3r=133.3
We move all terms to the left:
4.3r-(133.3)=0
We add all the numbers together, and all the variables
4.3r-133.3=0
We move all terms containing r to the left, all other terms to the right
4.3r=133.3
r=133.3/4.3
r=31+2.8421709430404E-14/4.3
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