Compare 18/27 and 42/15
1st number: 18/27, 2nd number: 2 12/15
18/27 is smaller than 42/15
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 15 is 135
Next, find the equivalent fraction of both fractional numbers with denominator 135 - For the 1st fraction, since 27 × 5 = 135,
18/27 = 18 × 5/27 × 5 = 90/135 - Likewise, for the 2nd fraction, since 15 × 9 = 135,
42/15 = 42 × 9/15 × 9 = 378/135 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 90/135 < 378/135 or 18/27 < 42/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/27 and 42/15 18/27 and 84/15 18/54 and 42/15 18/27 and 42/30 54/27 and 42/15 18/81 and 42/15 18/27 and 42/45 90/27 and 42/15 18/27 and 42/75