The mixed number 89 9/80 written as an improper fraction is 7129/80
To turn the mixed number 89 9/80 into an improper fraction, use these simple steps:
First, multiply the whole number by the denominator of the fractional part: 89 × 80 = 7120.
After that, add the result to the numerator of the fractional part: 7120 + 9 = 7129.
Next, Write the sum of the previous step on the original denominator: 7129/80.
This means that 89 9/80, as an improper fraction, equals 7129/80.
See also: 89 9/80 as a decimal