Think of it as 3 + .9
Then it could be 30/10 + 9/10
39/10 is the simplest fraction of 3.90.
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390%(percent) = 3.9(decimal) = 3 and 9/10(mixed fraction) = 39/10(improper fraction)
60/390 can equal 2/13 by dividing 30 on both sides of the fraction
78/1 390/5
39,000,000
390.007