Subtract 10/15 from 56/21
1st number: 2 14/21, 2nd number: 10/15
56/21 - 10/15 is 2/1.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 15 is 105
Next, find the equivalent fraction of both fractional numbers with denominator 105 - For the 1st fraction, since 21 × 5 = 105,
56/21 = 56 × 5/21 × 5 = 280/105 - Likewise, for the 2nd fraction, since 15 × 7 = 105,
10/15 = 10 × 7/15 × 7 = 70/105 - Subtract the two like fractions:
280/105 - 70/105 = 280 - 70/105 = 210/105 - After reducing the fraction, the answer is 2/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/21-20/15 56/42-10/15 56/21-10/30 56/21-30/15 56/63-10/15 56/21-10/45 56/21-50/15 56/21-10/75 56/21-70/15