The mixed number 80 89/20 written as an improper fraction is 1689/20
To turn the mixed number 80 89/20 into an improper fraction, use these simple steps:
First, multiply the whole number by the denominator of the fractional part: 80 × 20 = 1600.
After that, add the result to the numerator of the fractional part: 1600 + 89 = 1689.
Next, Write the sum of the previous step on the original denominator: 1689/20.
This means that 80 89/20, as an improper fraction, equals 1689/20.
See also: 80 89/20 as a decimal