Compare 21/9 and 70/18
1st number: 2 3/9, 2nd number: 3 16/18
21/9 is smaller than 70/18
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 18 is 18
Next, find the equivalent fraction of both fractional numbers with denominator 18 - For the 1st fraction, since 9 × 2 = 18,
21/9 = 21 × 2/9 × 2 = 42/18 - Likewise, for the 2nd fraction, since 18 × 1 = 18,
70/18 = 70 × 1/18 × 1 = 70/18 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 42/18 < 70/18 or 21/9 < 70/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/9 and 70/18 21/18 and 70/18 21/9 and 70/36 63/9 and 70/18 21/27 and 70/18 21/9 and 70/54 21/45 and 70/18 21/9 and 70/90 21/63 and 70/18