Compare 42/12 and 18/30
1st number: 3 6/12, 2nd number: 18/30
42/12 is greater than 18/30
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 30 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 12 × 5 = 60,
42/12 = 42 × 5/12 × 5 = 210/60 - Likewise, for the 2nd fraction, since 30 × 2 = 60,
18/30 = 18 × 2/30 × 2 = 36/60 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 210/60 > 36/60 or 42/12 > 18/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/12 and 18/30 42/12 and 36/30 42/24 and 18/30 42/12 and 18/60 42/12 and 54/30 42/36 and 18/30 42/12 and 18/90 42/12 and 90/30 42/60 and 18/30 42/84 and 18/30