r+8.7=20.3

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Solution for r+8.7=20.3 equation: 



r+8.7=20.3

We move all terms to the left:

r+8.7-(20.3)=0

We add all the numbers together, and all the variables

r-11.6=0

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

r=11.6

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