Subtract 21/7 from 10/14
1st number: 10/14, 2nd number: 3 0/7
10/14 - 21/7 is -16/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 7 is 14
Next, find the equivalent fraction of both fractional numbers with denominator 14 - For the 1st fraction, since 14 × 1 = 14,
10/14 = 10 × 1/14 × 1 = 10/14 - Likewise, for the 2nd fraction, since 7 × 2 = 14,
21/7 = 21 × 2/7 × 2 = 42/14 - Subtract the two like fractions:
10/14 - 42/14 = 10 - 42/14 = -32/14 - After reducing the fraction, the answer is -16/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/14-21/7 10/14-42/7 10/28-21/7 10/14-21/14 30/14-21/7 10/14-63/7 10/42-21/7 50/14-21/7 10/70-21/7 10/14-21/35 70/14-21/7 10/98-21/7 10/14-21/49