Compare 18/15 and 21/27
1st number: 1 3/15, 2nd number: 21/27
18/15 is greater than 21/27
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 27 is 135
Next, find the equivalent fraction of both fractional numbers with denominator 135 - For the 1st fraction, since 15 × 9 = 135,
18/15 = 18 × 9/15 × 9 = 162/135 - Likewise, for the 2nd fraction, since 27 × 5 = 135,
21/27 = 21 × 5/27 × 5 = 105/135 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 162/135 > 105/135 or 18/15 > 21/27
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/15 and 21/27 18/15 and 42/27 18/30 and 21/27 18/15 and 21/54 54/15 and 21/27 18/15 and 63/27 18/45 and 21/27 18/15 and 21/81 90/15 and 21/27 18/75 and 21/27