The mixed number 64 21/80 written as an improper fraction is 5141/80
To turn the mixed number 64 21/80 into an improper fraction, use these simple steps:
First, multiply the whole number by the denominator of the fractional part: 64 × 80 = 5120.
After that, add the result to the numerator of the fractional part: 5120 + 21 = 5141.
Next, Write the sum of the previous step on the original denominator: 5141/80.
This means that 64 21/80, as an improper fraction, equals 5141/80.
See also: 64 21/80 as a decimal