Subtract 27/8 from 81/5
1st number: 16 1/5, 2nd number: 3 3/8
81/5 - 27/8 is 513/40.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 8 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 5 × 8 = 40,
81/5 = 81 × 8/5 × 8 = 648/40 - Likewise, for the 2nd fraction, since 8 × 5 = 40,
27/8 = 27 × 5/8 × 5 = 135/40 - Subtract the two like fractions:
648/40 - 135/40 = 648 - 135/40 = 513/40 - In mixed form: 1233/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/5-54/8 81/10-27/8 81/5-27/16 81/5-81/8 81/15-27/8 81/5-27/24 81/25-27/8 81/5-27/40 81/35-27/8 81/5-27/56