Subtract 4/21 from 28/24
1st number: 1 4/24, 2nd number: 4/21
28/24 - 4/21 is 41/42.
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,
28/24 = 28 × 7/24 × 7 = 196/168 - Likewise, for the 2nd fraction, since 21 × 8 = 168,
4/21 = 4 × 8/21 × 8 = 32/168 - Subtract the two like fractions:
196/168 - 32/168 = 196 - 32/168 = 164/168 - After reducing the fraction, the answer is 41/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/24-4/21 28/24-8/21 28/48-4/21 28/24-4/42 84/24-4/21 28/24-12/21 28/72-4/21 28/24-4/63 28/24-20/21 28/24-28/21