The mixed number 20 57/40 written as an improper fraction is 857/40
To turn the mixed number 20 57/40 into an improper fraction, use these simple steps:
First, multiply the whole number by the denominator of the fractional part: 20 × 40 = 800.
After that, add the result to the numerator of the fractional part: 800 + 57 = 857.
Next, Write the sum of the previous step on the original denominator: 857/40.
This means that 20 57/40, as an improper fraction, equals 857/40.
See also: 20 57/40 as a decimal