Subtract 5/24 from 8/21
8/21 - 5/24 is 29/168.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 24 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 21 × 8 = 168,
8/21 = 8 × 8/21 × 8 = 64/168 - Likewise, for the 2nd fraction, since 24 × 7 = 168,
5/24 = 5 × 7/24 × 7 = 35/168 - Subtract the two like fractions:
64/168 - 35/168 = 64 - 35/168 = 29/168
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/21-5/24 8/21-10/24 8/42-5/24 8/21-5/48 24/21-5/24 8/21-15/24 8/63-5/24 8/21-5/72 40/21-5/24 8/21-25/24 56/21-5/24 8/21-35/24