Subtract 7/24 from 81/40
1st number: 2 1/40, 2nd number: 7/24
81/40 - 7/24 is 26/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 24 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 40 × 3 = 120,
81/40 = 81 × 3/40 × 3 = 243/120 - Likewise, for the 2nd fraction, since 24 × 5 = 120,
7/24 = 7 × 5/24 × 5 = 35/120 - Subtract the two like fractions:
243/120 - 35/120 = 243 - 35/120 = 208/120 - After reducing the fraction, the answer is 26/15
- In mixed form: 111/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/40-14/24 81/80-7/24 81/40-7/48 81/40-21/24 81/40-7/72 81/40-35/24 81/40-49/24