The mixed number 3 9/40 written as an improper fraction is 129/40
To turn the mixed number 3 9/40 into an improper fraction, use these simple steps:
First, multiply the whole number by the denominator of the fractional part: 3 × 40 = 120.
After that, add the result to the numerator of the fractional part: 120 + 9 = 129.
Next, Write the sum of the previous step on the original denominator: 129/40.
This means that 3 9/40, as an improper fraction, equals 129/40.
See also: 3 9/40 as a decimal