Subtract 10/28 from 25/21
1st number: 1 4/21, 2nd number: 10/28
25/21 - 10/28 is 5/6.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 28 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 21 × 4 = 84,
25/21 = 25 × 4/21 × 4 = 100/84 - Likewise, for the 2nd fraction, since 28 × 3 = 84,
10/28 = 10 × 3/28 × 3 = 30/84 - Subtract the two like fractions:
100/84 - 30/84 = 100 - 30/84 = 70/84 - After reducing the fraction, the answer is 5/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/21-10/28 25/21-20/28 25/42-10/28 25/21-10/56 75/21-10/28 25/21-30/28 25/63-10/28 25/21-10/84 25/21-50/28 25/21-70/28