Subtract 3/56 from 6/21
6/21 - 3/56 is 13/56.
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,
6/21 = 6 × 8/21 × 8 = 48/168 - Likewise, for the 2nd fraction, since 56 × 3 = 168,
3/56 = 3 × 3/56 × 3 = 9/168 - Subtract the two like fractions:
48/168 - 9/168 = 48 - 9/168 = 39/168 - After reducing the fraction, the answer is 13/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/21-3/56 6/21-6/56 6/42-3/56 18/21-3/56 6/21-9/56 6/63-3/56 30/21-3/56 6/21-15/56 42/21-3/56 6/21-21/56