Compare 30/27 and 21/84
1st number: 1 3/27, 2nd number: 21/84
30/27 is greater than 21/84
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 84 is 756
Next, find the equivalent fraction of both fractional numbers with denominator 756 - For the 1st fraction, since 27 × 28 = 756,
30/27 = 30 × 28/27 × 28 = 840/756 - Likewise, for the 2nd fraction, since 84 × 9 = 756,
21/84 = 21 × 9/84 × 9 = 189/756 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 840/756 > 189/756 or 30/27 > 21/84
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/27 and 21/84 30/27 and 42/84 30/54 and 21/84 90/27 and 21/84 30/27 and 63/84 30/81 and 21/84