The mixed number 15 99/20 written as an improper fraction is 399/20
To turn the mixed number 15 99/20 into an improper fraction, use these simple steps:
First, multiply the whole number by the denominator of the fractional part: 15 × 20 = 300.
After that, add the result to the numerator of the fractional part: 300 + 99 = 399.
Next, Write the sum of the previous step on the original denominator: 399/20.
This means that 15 99/20, as an improper fraction, equals 399/20.
See also: 15 99/20 as a decimal