r-12.1=4.3

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Solution for r-12.1=4.3 equation: 



r-12.1=4.3

We move all terms to the left:

r-12.1-(4.3)=0

We add all the numbers together, and all the variables

r-16.4=0

We move all terms containing r to the left, all other terms to the right

r=16.4

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