Compare 30/21 and 28/14
1st number: 1 9/21, 2nd number: 2 0/14
30/21 is smaller than 28/14
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 14 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 21 × 2 = 42,
30/21 = 30 × 2/21 × 2 = 60/42 - Likewise, for the 2nd fraction, since 14 × 3 = 42,
28/14 = 28 × 3/14 × 3 = 84/42 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 60/42 < 84/42 or 30/21 < 28/14
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 28/14 30/21 and 56/14 30/42 and 28/14 90/21 and 28/14 30/21 and 84/14 30/63 and 28/14 30/21 and 28/42 30/21 and 28/70 30/21 and 28/98