The mixed number 128 17/80 written as an improper fraction is 10257/80
To turn the mixed number 128 17/80 into an improper fraction, use these simple steps:
First, multiply the whole number by the denominator of the fractional part: 128 × 80 = 10240.
After that, add the result to the numerator of the fractional part: 10240 + 17 = 10257.
Next, Write the sum of the previous step on the original denominator: 10257/80.
This means that 128 17/80, as an improper fraction, equals 10257/80.
See also: 128 17/80 as a decimal