Compare 6/12 and 9/21
6/12 is greater than 9/21
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 21 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 12 × 7 = 84,
6/12 = 6 × 7/12 × 7 = 42/84 - Likewise, for the 2nd fraction, since 21 × 4 = 84,
9/21 = 9 × 4/21 × 4 = 36/84 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 42/84 > 36/84 or 6/12 > 9/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/12 and 18/21 6/24 and 9/21 6/12 and 9/42 18/12 and 9/21 6/12 and 27/21 6/36 and 9/21 6/12 and 9/63 30/12 and 9/21 6/12 and 45/21 6/60 and 9/21 42/12 and 9/21 6/12 and 63/21 6/84 and 9/21