The mixed number 87 13/40 written as an improper fraction is 3493/40
To turn the mixed number 87 13/40 into an improper fraction, use these simple steps:
First, multiply the whole number by the denominator of the fractional part: 87 × 40 = 3480.
After that, add the result to the numerator of the fractional part: 3480 + 13 = 3493.
Next, Write the sum of the previous step on the original denominator: 3493/40.
This means that 87 13/40, as an improper fraction, equals 3493/40.
See also: 87 13/40 as a decimal