Compare 15/24 and 9/21
15/24 is greater than 9/21
Steps for comparing 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,
15/24 = 15 × 7/24 × 7 = 105/168 - Likewise, for the 2nd fraction, since 21 × 8 = 168,
9/21 = 9 × 8/21 × 8 = 72/168 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 105/168 > 72/168 or 15/24 > 9/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/24 and 9/21 15/24 and 18/21 15/48 and 9/21 15/24 and 9/42 45/24 and 9/21 15/24 and 27/21 15/72 and 9/21 15/24 and 9/63 75/24 and 9/21 15/24 and 45/21 15/24 and 63/21