Compare 28/84 and 30/18
1st number: 28/84, 2nd number: 1 12/18
28/84 is smaller than 30/18
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 18 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 84 × 3 = 252,
28/84 = 28 × 3/84 × 3 = 84/252 - Likewise, for the 2nd fraction, since 18 × 14 = 252,
30/18 = 30 × 14/18 × 14 = 420/252 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 84/252 < 420/252 or 28/84 < 30/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/84 and 30/18 28/84 and 60/18 28/84 and 30/36 28/84 and 90/18 28/84 and 30/54 28/84 and 30/90