Subtract 6/14 from 28/21
1st number: 1 7/21, 2nd number: 6/14
28/21 - 6/14 is 19/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 14 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 21 × 2 = 42,
28/21 = 28 × 2/21 × 2 = 56/42 - Likewise, for the 2nd fraction, since 14 × 3 = 42,
6/14 = 6 × 3/14 × 3 = 18/42 - Subtract the two like fractions:
56/42 - 18/42 = 56 - 18/42 = 38/42 - After reducing the fraction, the answer is 19/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/21-6/14 28/21-12/14 28/42-6/14 28/21-6/28 84/21-6/14 28/21-18/14 28/63-6/14 28/21-6/42 28/21-30/14 28/21-6/70 28/21-42/14 28/21-6/98