Subtract 4/24 from 45/21
1st number: 2 3/21, 2nd number: 4/24
45/21 - 4/24 is 83/42.
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,
45/21 = 45 × 8/21 × 8 = 360/168 - Likewise, for the 2nd fraction, since 24 × 7 = 168,
4/24 = 4 × 7/24 × 7 = 28/168 - Subtract the two like fractions:
360/168 - 28/168 = 360 - 28/168 = 332/168 - After reducing the fraction, the answer is 83/42
- In mixed form: 141/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/21-4/24 45/21-8/24 45/42-4/24 45/21-4/48 45/21-12/24 45/63-4/24 45/21-4/72 45/21-20/24 45/21-28/24