Subtract 14/7 from 21/14
1st number: 1 7/14, 2nd number: 2 0/7
21/14 - 14/7 is -1/2.
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,
21/14 = 21 × 1/14 × 1 = 21/14 - Likewise, for the 2nd fraction, since 7 × 2 = 14,
14/7 = 14 × 2/7 × 2 = 28/14 - Subtract the two like fractions:
21/14 - 28/14 = 21 - 28/14 = -7/14 - After reducing the fraction, the answer is -1/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/14-14/7 21/14-28/7 21/28-14/7 63/14-14/7 21/14-42/7 21/42-14/7 21/14-14/21 21/14-70/7 21/70-14/7 21/14-14/35 21/14-98/7 21/98-14/7 21/14-14/49