Subtract 81/8 from 56/5
1st number: 11 1/5, 2nd number: 10 1/8
56/5 - 81/8 is 43/40.
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,
56/5 = 56 × 8/5 × 8 = 448/40 - Likewise, for the 2nd fraction, since 8 × 5 = 40,
81/8 = 81 × 5/8 × 5 = 405/40 - Subtract the two like fractions:
448/40 - 405/40 = 448 - 405/40 = 43/40 - In mixed form: 13/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/10-81/8 56/5-81/16 56/15-81/8 56/5-81/24 56/25-81/8 56/5-81/40 56/35-81/8 56/5-81/56