The mixed number 86 31/10 written as an improper fraction is 891/10
To turn the mixed number 86 31/10 into an improper fraction, use these simple steps:
First, multiply the whole number by the denominator of the fractional part: 86 × 10 = 860.
After that, add the result to the numerator of the fractional part: 860 + 31 = 891.
Next, Write the sum of the previous step on the original denominator: 891/10.
This means that 86 31/10, as an improper fraction, equals 891/10.
See also: 86 31/10 as a decimal