Subtract 21/24 from 28/10
1st number: 2 8/10, 2nd number: 21/24
28/10 - 21/24 is 77/40.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 24 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 10 × 12 = 120,
28/10 = 28 × 12/10 × 12 = 336/120 - Likewise, for the 2nd fraction, since 24 × 5 = 120,
21/24 = 21 × 5/24 × 5 = 105/120 - Subtract the two like fractions:
336/120 - 105/120 = 336 - 105/120 = 231/120 - After reducing the fraction, the answer is 77/40
- In mixed form: 137/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/10-21/24 28/10-42/24 28/20-21/24 28/10-21/48 84/10-21/24 28/10-63/24 28/30-21/24 28/10-21/72 28/50-21/24 28/70-21/24