Subtract 14/24 from 7/21
7/21 - 14/24 is -1/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 24 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 21 × 8 = 168,
7/21 = 7 × 8/21 × 8 = 56/168 - Likewise, for the 2nd fraction, since 24 × 7 = 168,
14/24 = 14 × 7/24 × 7 = 98/168 - Subtract the two like fractions:
56/168 - 98/168 = 56 - 98/168 = -42/168 - After reducing the fraction, the answer is -1/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/21-14/24 7/21-28/24 7/42-14/24 7/21-14/48 7/21-42/24 7/63-14/24 7/21-14/72 35/21-14/24 7/21-70/24 49/21-14/24 7/21-98/24