Compare 21/8 and 30/28
1st number: 2 5/8, 2nd number: 1 2/28
21/8 is greater than 30/28
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 28 is 56
Next, find the equivalent fraction of both fractional numbers with denominator 56 - For the 1st fraction, since 8 × 7 = 56,
21/8 = 21 × 7/8 × 7 = 147/56 - Likewise, for the 2nd fraction, since 28 × 2 = 56,
30/28 = 30 × 2/28 × 2 = 60/56 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 147/56 > 60/56 or 21/8 > 30/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/8 and 30/28 21/8 and 60/28 21/16 and 30/28 21/8 and 30/56 63/8 and 30/28 21/8 and 90/28 21/24 and 30/28 21/8 and 30/84 21/40 and 30/28 21/56 and 30/28