Subtract 7/21 from 10/14
10/14 - 7/21 is 8/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 21 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 14 × 3 = 42,
10/14 = 10 × 3/14 × 3 = 30/42 - Likewise, for the 2nd fraction, since 21 × 2 = 42,
7/21 = 7 × 2/21 × 2 = 14/42 - Subtract the two like fractions:
30/42 - 14/42 = 30 - 14/42 = 16/42 - After reducing the fraction, the answer is 8/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/14-7/21 10/14-14/21 10/28-7/21 10/14-7/42 30/14-7/21 10/42-7/21 10/14-7/63 50/14-7/21 10/14-35/21 10/70-7/21 70/14-7/21 10/14-49/21 10/98-7/21