Compare 21/28 and 30/54
21/28 is greater than 30/54
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 54 is 756
Next, find the equivalent fraction of both fractional numbers with denominator 756 - For the 1st fraction, since 28 × 27 = 756,
21/28 = 21 × 27/28 × 27 = 567/756 - Likewise, for the 2nd fraction, since 54 × 14 = 756,
30/54 = 30 × 14/54 × 14 = 420/756 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 567/756 > 420/756 or 21/28 > 30/54
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/28 and 30/54 21/28 and 60/54 21/56 and 30/54 63/28 and 30/54 21/28 and 90/54 21/84 and 30/54