The mixed number 42 21/8 written as an improper fraction is 357/8
To turn the mixed number 42 21/8 into an improper fraction, use these simple steps:
First, multiply the whole number by the denominator of the fractional part: 42 × 8 = 336.
After that, add the result to the numerator of the fractional part: 336 + 21 = 357.
Next, Write the sum of the previous step on the original denominator: 357/8.
This means that 42 21/8, as an improper fraction, equals 357/8.
See also: 42 21/8 as a decimal