The mixed number 128 9/10 written as an improper fraction is 1289/10
To turn the mixed number 128 9/10 into an improper fraction, use these simple steps:
First, multiply the whole number by the denominator of the fractional part: 128 × 10 = 1280.
After that, add the result to the numerator of the fractional part: 1280 + 9 = 1289.
Next, Write the sum of the previous step on the original denominator: 1289/10.
This means that 128 9/10, as an improper fraction, equals 1289/10.
See also: 128 9/10 as a decimal