Compare 15/18 and 9/30
15/18 is greater than 9/30
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 30 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 18 × 5 = 90,
15/18 = 15 × 5/18 × 5 = 75/90 - Likewise, for the 2nd fraction, since 30 × 3 = 90,
9/30 = 9 × 3/30 × 3 = 27/90 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 75/90 > 27/90 or 15/18 > 9/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/18 and 9/30 15/18 and 18/30 15/36 and 9/30 15/18 and 9/60 45/18 and 9/30 15/18 and 27/30 15/54 and 9/30 15/18 and 9/90 75/18 and 9/30 15/18 and 45/30 15/90 and 9/30 15/18 and 63/30