Subtract 4/28 from 20/24
20/24 - 4/28 is 29/42.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 28 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 24 × 7 = 168,
20/24 = 20 × 7/24 × 7 = 140/168 - Likewise, for the 2nd fraction, since 28 × 6 = 168,
4/28 = 4 × 6/28 × 6 = 24/168 - Subtract the two like fractions:
140/168 - 24/168 = 140 - 24/168 = 116/168 - After reducing the fraction, the answer is 29/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/24-4/28 20/24-8/28 20/48-4/28 20/24-4/56 60/24-4/28 20/24-12/28 20/72-4/28 20/24-4/84 20/24-20/28