Compare 15/90 and 30/12
1st number: 15/90, 2nd number: 2 6/12
15/90 is smaller than 30/12
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 12 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 90 × 2 = 180,
15/90 = 15 × 2/90 × 2 = 30/180 - Likewise, for the 2nd fraction, since 12 × 15 = 180,
30/12 = 30 × 15/12 × 15 = 450/180 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 30/180 < 450/180 or 15/90 < 30/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/90 and 30/12 15/90 and 60/12 15/90 and 30/24 45/90 and 30/12 15/90 and 90/12 15/90 and 30/36 75/90 and 30/12 15/90 and 30/60 15/90 and 30/84