Subtract 21/56 from 35/21
1st number: 1 14/21, 2nd number: 21/56
35/21 - 21/56 is 31/24.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 56 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 21 × 8 = 168,
35/21 = 35 × 8/21 × 8 = 280/168 - Likewise, for the 2nd fraction, since 56 × 3 = 168,
21/56 = 21 × 3/56 × 3 = 63/168 - Subtract the two like fractions:
280/168 - 63/168 = 280 - 63/168 = 217/168 - After reducing the fraction, the answer is 31/24
- In mixed form: 17/24
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/21-21/56 35/21-42/56 35/42-21/56 35/21-63/56 35/63-21/56