The mixed number 28 9/40 written as an improper fraction is 1129/40
To turn the mixed number 28 9/40 into an improper fraction, use these simple steps:
First, multiply the whole number by the denominator of the fractional part: 28 × 40 = 1120.
After that, add the result to the numerator of the fractional part: 1120 + 9 = 1129.
Next, Write the sum of the previous step on the original denominator: 1129/40.
This means that 28 9/40, as an improper fraction, equals 1129/40.
See also: 28 9/40 as a decimal