The mixed number 90 57/20 written as an improper fraction is 1857/20
To turn the mixed number 90 57/20 into an improper fraction, use these simple steps:
First, multiply the whole number by the denominator of the fractional part: 90 × 20 = 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: 1857/20.
This means that 90 57/20, as an improper fraction, equals 1857/20.
See also: 90 57/20 as a decimal