Compare 6/84 and 30/21
1st number: 6/84, 2nd number: 1 9/21
6/84 is smaller than 30/21
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 21 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 84 × 1 = 84,
6/84 = 6 × 1/84 × 1 = 6/84 - Likewise, for the 2nd fraction, since 21 × 4 = 84,
30/21 = 30 × 4/21 × 4 = 120/84 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 6/84 < 120/84 or 6/84 < 30/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/84 and 30/21 6/84 and 60/21 6/84 and 30/42 18/84 and 30/21 6/84 and 90/21 6/84 and 30/63 30/84 and 30/21 42/84 and 30/21