Compare 30/21 and 12/24
1st number: 1 9/21, 2nd number: 12/24
30/21 is greater than 12/24
Steps for comparing 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,
30/21 = 30 × 8/21 × 8 = 240/168 - Likewise, for the 2nd fraction, since 24 × 7 = 168,
12/24 = 12 × 7/24 × 7 = 84/168 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 240/168 > 84/168 or 30/21 > 12/24
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/21 and 12/24 30/42 and 12/24 30/21 and 12/48 90/21 and 12/24 30/21 and 36/24 30/63 and 12/24 30/21 and 12/72 30/21 and 60/24 30/21 and 84/24