Subtract 21/24 from 25/21
1st number: 1 4/21, 2nd number: 21/24
25/21 - 21/24 is 53/168.
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,
25/21 = 25 × 8/21 × 8 = 200/168 - Likewise, for the 2nd fraction, since 24 × 7 = 168,
21/24 = 21 × 7/24 × 7 = 147/168 - Subtract the two like fractions:
200/168 - 147/168 = 200 - 147/168 = 53/168
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/21-21/24 25/21-42/24 25/42-21/24 25/21-21/48 75/21-21/24 25/21-63/24 25/63-21/24 25/21-21/72