Subtract 21/12 from 35/14
1st number: 2 7/14, 2nd number: 1 9/12
35/14 - 21/12 is 3/4.
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,
35/14 = 35 × 6/14 × 6 = 210/84 - Likewise, for the 2nd fraction, since 12 × 7 = 84,
21/12 = 21 × 7/12 × 7 = 147/84 - Subtract the two like fractions:
210/84 - 147/84 = 210 - 147/84 = 63/84 - After reducing the fraction, the answer is 3/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/14-21/12 35/14-42/12 35/28-21/12 35/14-21/24 35/14-63/12 35/42-21/12 35/14-21/36 35/70-21/12 35/14-21/60 35/98-21/12 35/14-21/84