The mixed number 45 57/40 written as an improper fraction is 1857/40
To turn the mixed number 45 57/40 into an improper fraction, use these simple steps:
First, multiply the whole number by the denominator of the fractional part: 45 × 40 = 1800.
After that, add the result to the numerator of the fractional part: 1800 + 57 = 1857.
Next, Write the sum of the previous step on the original denominator: 1857/40.
This means that 45 57/40, as an improper fraction, equals 1857/40.
See also: 45 57/40 as a decimal