Compare 21/24 and 5/42
21/24 is greater than 5/42
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 42 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 24 × 7 = 168,
21/24 = 21 × 7/24 × 7 = 147/168 - Likewise, for the 2nd fraction, since 42 × 4 = 168,
5/42 = 5 × 4/42 × 4 = 20/168 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 147/168 > 20/168 or 21/24 > 5/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/24 and 5/42 21/24 and 10/42 21/48 and 5/42 21/24 and 5/84 63/24 and 5/42 21/24 and 15/42 21/72 and 5/42 21/24 and 25/42 21/24 and 35/42