Subtract 5/24 from 81/30
1st number: 2 21/30, 2nd number: 5/24
81/30 - 5/24 is 299/120.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 24 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 30 × 4 = 120,
81/30 = 81 × 4/30 × 4 = 324/120 - Likewise, for the 2nd fraction, since 24 × 5 = 120,
5/24 = 5 × 5/24 × 5 = 25/120 - Subtract the two like fractions:
324/120 - 25/120 = 324 - 25/120 = 299/120 - In mixed form: 259/120
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/30-10/24 81/60-5/24 81/30-5/48 81/30-15/24 81/90-5/24 81/30-5/72 81/30-25/24 81/30-35/24