Compare 6/9 and 7/21
6/9 is greater than 7/21
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 21 is 63
Next, find the equivalent fraction of both fractional numbers with denominator 63 - For the 1st fraction, since 9 × 7 = 63,
6/9 = 6 × 7/9 × 7 = 42/63 - Likewise, for the 2nd fraction, since 21 × 3 = 63,
7/21 = 7 × 3/21 × 3 = 21/63 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 42/63 > 21/63 or 6/9 > 7/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/9 and 7/21 6/9 and 14/21 6/18 and 7/21 6/9 and 7/42 18/9 and 7/21 6/27 and 7/21 6/9 and 7/63 30/9 and 7/21 6/9 and 35/21 6/45 and 7/21 42/9 and 7/21 6/9 and 49/21 6/63 and 7/21