Compare 14/18 and 18/21
14/18 is smaller than 18/21
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 21 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 18 × 7 = 126,
14/18 = 14 × 7/18 × 7 = 98/126 - Likewise, for the 2nd fraction, since 21 × 6 = 126,
18/21 = 18 × 6/21 × 6 = 108/126 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 98/126 < 108/126 or 14/18 < 18/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 28/18 and 18/21 14/18 and 36/21 14/36 and 18/21 14/18 and 18/42 42/18 and 18/21 14/18 and 54/21 14/54 and 18/21 14/18 and 18/63 70/18 and 18/21 14/18 and 90/21 14/90 and 18/21 98/18 and 18/21