The improper fraction 390/18 as a mixed number is 21 12/18
In order to convert 390/18 to a mixed number, we need to divide the numerator by the denominator to get a whole number and a remainder, and express the result as a whole number and a proper fraction.
To see it, we just need to put the whole number together with our remainder and original denominator:
So 390/18 as a mixed number is 21 12/18.