The mixed number 21 28/25 written as an improper fraction is 553/25
To turn the mixed number 21 28/25 into an improper fraction, use these simple steps:
First, multiply the whole number by the denominator of the fractional part: 21 × 25 = 525.
After that, add the result to the numerator of the fractional part: 525 + 28 = 553.
Next, Write the sum of the previous step on the original denominator: 553/25.
This means that 21 28/25, as an improper fraction, equals 553/25.
See also: 21 28/25 as a decimal