Subtract 8/18 from 81/24
1st number: 3 9/24, 2nd number: 8/18
81/24 - 8/18 is 211/72.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 18 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 24 × 3 = 72,
81/24 = 81 × 3/24 × 3 = 243/72 - Likewise, for the 2nd fraction, since 18 × 4 = 72,
8/18 = 8 × 4/18 × 4 = 32/72 - Subtract the two like fractions:
243/72 - 32/72 = 243 - 32/72 = 211/72 - In mixed form: 267/72
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/24-16/18 81/48-8/18 81/24-8/36 81/24-24/18 81/72-8/18 81/24-8/54 81/24-40/18 81/24-8/90 81/24-56/18