Subtract 5/21 from 10/24
10/24 - 5/21 is 5/28.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 21 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 24 × 7 = 168,
10/24 = 10 × 7/24 × 7 = 70/168 - Likewise, for the 2nd fraction, since 21 × 8 = 168,
5/21 = 5 × 8/21 × 8 = 40/168 - Subtract the two like fractions:
70/168 - 40/168 = 70 - 40/168 = 30/168 - After reducing the fraction, the answer is 5/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/24-5/21 10/24-10/21 10/48-5/21 10/24-5/42 30/24-5/21 10/24-15/21 10/72-5/21 10/24-5/63 50/24-5/21 10/24-25/21 70/24-5/21 10/24-35/21