Subtract 21/24 from 25/28
25/28 - 21/24 is 1/56.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 24 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 28 × 6 = 168,
25/28 = 25 × 6/28 × 6 = 150/168 - Likewise, for the 2nd fraction, since 24 × 7 = 168,
21/24 = 21 × 7/24 × 7 = 147/168 - Subtract the two like fractions:
150/168 - 147/168 = 150 - 147/168 = 3/168 - After reducing the fraction, the answer is 1/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/28-21/24 25/28-42/24 25/56-21/24 25/28-21/48 75/28-21/24 25/28-63/24 25/84-21/24 25/28-21/72