Subtract 24/14 from 7/21
1st number: 7/21, 2nd number: 1 10/14
7/21 - 24/14 is -29/21.
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,
7/21 = 7 × 2/21 × 2 = 14/42 - Likewise, for the 2nd fraction, since 14 × 3 = 42,
24/14 = 24 × 3/14 × 3 = 72/42 - Subtract the two like fractions:
14/42 - 72/42 = 14 - 72/42 = -58/42 - After reducing the fraction, the answer is -29/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/21-24/14 7/21-48/14 7/42-24/14 7/21-24/28 7/21-72/14 7/63-24/14 7/21-24/42 35/21-24/14 7/21-24/70 49/21-24/14 7/21-24/98