Subtract 21/12 from 7/14
1st number: 7/14, 2nd number: 1 9/12
7/14 - 21/12 is -5/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 12 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 14 × 6 = 84,
7/14 = 7 × 6/14 × 6 = 42/84 - Likewise, for the 2nd fraction, since 12 × 7 = 84,
21/12 = 21 × 7/12 × 7 = 147/84 - Subtract the two like fractions:
42/84 - 147/84 = 42 - 147/84 = -105/84 - After reducing the fraction, the answer is -5/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 7/14-42/12 7/28-21/12 7/14-21/24 21/14-21/12 7/14-63/12 7/42-21/12 7/14-21/36 35/14-21/12 7/70-21/12 7/14-21/60 49/14-21/12 7/98-21/12 7/14-21/84