The mixed number 84 21/40 written as an improper fraction is 3381/40
To turn the mixed number 84 21/40 into an improper fraction, use these simple steps:
First, multiply the whole number by the denominator of the fractional part: 84 × 40 = 3360.
After that, add the result to the numerator of the fractional part: 3360 + 21 = 3381.
Next, Write the sum of the previous step on the original denominator: 3381/40.
This means that 84 21/40, as an improper fraction, equals 3381/40.
See also: 84 21/40 as a decimal