Subtract 12/14 from 14/21
14/21 - 12/14 is -4/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 14 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 21 × 2 = 42,
14/21 = 14 × 2/21 × 2 = 28/42 - Likewise, for the 2nd fraction, since 14 × 3 = 42,
12/14 = 12 × 3/14 × 3 = 36/42 - Subtract the two like fractions:
28/42 - 36/42 = 28 - 36/42 = -8/42 - After reducing the fraction, the answer is -4/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 28/21-12/14 14/21-24/14 14/42-12/14 14/21-12/28 42/21-12/14 14/21-36/14 14/63-12/14 14/21-12/42 70/21-12/14 14/21-60/14 14/21-12/70 98/21-12/14 14/21-84/14 14/21-12/98