The mixed number 15 21/10 written as an improper fraction is 171/10
To turn the mixed number 15 21/10 into an improper fraction, use these simple steps:
First, multiply the whole number by the denominator of the fractional part: 15 × 10 = 150.
After that, add the result to the numerator of the fractional part: 150 + 21 = 171.
Next, Write the sum of the previous step on the original denominator: 171/10.
This means that 15 21/10, as an improper fraction, equals 171/10.
See also: 15 21/10 as a decimal