Subtract 3/18 from 81/24
1st number: 3 9/24, 2nd number: 3/18
81/24 - 3/18 is 77/24.
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,
3/18 = 3 × 4/18 × 4 = 12/72 - Subtract the two like fractions:
243/72 - 12/72 = 243 - 12/72 = 231/72 - After reducing the fraction, the answer is 77/24
- In mixed form: 35/24
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/24-6/18 81/48-3/18 81/24-3/36 81/24-9/18 81/72-3/18 81/24-3/54 81/24-15/18 81/24-3/90 81/24-21/18