Compare 30/42 and 15/9
1st number: 30/42, 2nd number: 1 6/9
30/42 is smaller than 15/9
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 9 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 42 × 3 = 126,
30/42 = 30 × 3/42 × 3 = 90/126 - Likewise, for the 2nd fraction, since 9 × 14 = 126,
15/9 = 15 × 14/9 × 14 = 210/126 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 90/126 < 210/126 or 30/42 < 15/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/42 and 15/9 30/42 and 30/9 30/84 and 15/9 30/42 and 15/18 90/42 and 15/9 30/42 and 45/9 30/42 and 15/27 30/42 and 75/9 30/42 and 15/45 30/42 and 15/63