Subtract 56/24 from 54/21
1st number: 2 12/21, 2nd number: 2 8/24
54/21 - 56/24 is 5/21.
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,
54/21 = 54 × 8/21 × 8 = 432/168 - Likewise, for the 2nd fraction, since 24 × 7 = 168,
56/24 = 56 × 7/24 × 7 = 392/168 - Subtract the two like fractions:
432/168 - 392/168 = 432 - 392/168 = 40/168 - After reducing the fraction, the answer is 5/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/42-56/24 54/21-56/48 54/63-56/24 54/21-56/72