The mixed number 28 70/80 written as an improper fraction is 2310/80
To turn the mixed number 28 70/80 into an improper fraction, use these simple steps:
First, multiply the whole number by the denominator of the fractional part: 28 × 80 = 2240.
After that, add the result to the numerator of the fractional part: 2240 + 70 = 2310.
Next, Write the sum of the previous step on the original denominator: 2310/80.
This means that 28 70/80, as an improper fraction, equals 2310/80.
See also: 28 70/80 as a decimal