Subtract 10/21 from 4/24
4/24 - 10/21 is -13/42.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 21 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 24 × 7 = 168,
4/24 = 4 × 7/24 × 7 = 28/168 - Likewise, for the 2nd fraction, since 21 × 8 = 168,
10/21 = 10 × 8/21 × 8 = 80/168 - Subtract the two like fractions:
28/168 - 80/168 = 28 - 80/168 = -52/168 - After reducing the fraction, the answer is -13/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/24-10/21 4/24-20/21 4/48-10/21 4/24-10/42 12/24-10/21 4/24-30/21 4/72-10/21 4/24-10/63 20/24-10/21 4/24-50/21 28/24-10/21 4/24-70/21