The mixed number 78 45/8 written as an improper fraction is 669/8
To turn the mixed number 78 45/8 into an improper fraction, use these simple steps:
First, multiply the whole number by the denominator of the fractional part: 78 × 8 = 624.
After that, add the result to the numerator of the fractional part: 624 + 45 = 669.
Next, Write the sum of the previous step on the original denominator: 669/8.
This means that 78 45/8, as an improper fraction, equals 669/8.
See also: 78 45/8 as a decimal