The mixed number 86 21/80 written as an improper fraction is 6901/80
To turn the mixed number 86 21/80 into an improper fraction, use these simple steps:
First, multiply the whole number by the denominator of the fractional part: 86 × 80 = 6880.
After that, add the result to the numerator of the fractional part: 6880 + 21 = 6901.
Next, Write the sum of the previous step on the original denominator: 6901/80.
This means that 86 21/80, as an improper fraction, equals 6901/80.
See also: 86 21/80 as a decimal