Compare 6/30 and 28/21
1st number: 6/30, 2nd number: 1 7/21
6/30 is smaller than 28/21
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 21 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 30 × 7 = 210,
6/30 = 6 × 7/30 × 7 = 42/210 - Likewise, for the 2nd fraction, since 21 × 10 = 210,
28/21 = 28 × 10/21 × 10 = 280/210 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 42/210 < 280/210 or 6/30 < 28/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/30 and 28/21 6/30 and 56/21 6/60 and 28/21 6/30 and 28/42 18/30 and 28/21 6/30 and 84/21 6/90 and 28/21 6/30 and 28/63 42/30 and 28/21