The mixed number 17 91/20 written as an improper fraction is 431/20
To turn the mixed number 17 91/20 into an improper fraction, use these simple steps:
First, multiply the whole number by the denominator of the fractional part: 17 × 20 = 340.
After that, add the result to the numerator of the fractional part: 340 + 91 = 431.
Next, Write the sum of the previous step on the original denominator: 431/20.
This means that 17 91/20, as an improper fraction, equals 431/20.
See also: 17 91/20 as a decimal