The mixed number 84 21/10 written as an improper fraction is 861/10
To turn the mixed number 84 21/10 into an improper fraction, use these simple steps:
First, multiply the whole number by the denominator of the fractional part: 84 × 10 = 840.
After that, add the result to the numerator of the fractional part: 840 + 21 = 861.
Next, Write the sum of the previous step on the original denominator: 861/10.
This means that 84 21/10, as an improper fraction, equals 861/10.
See also: 84 21/10 as a decimal