Compare 21/27 and 7/12
21/27 is greater than 7/12
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 12 is 108
Next, find the equivalent fraction of both fractional numbers with denominator 108 - For the 1st fraction, since 27 × 4 = 108,
21/27 = 21 × 4/27 × 4 = 84/108 - Likewise, for the 2nd fraction, since 12 × 9 = 108,
7/12 = 7 × 9/12 × 9 = 63/108 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 84/108 > 63/108 or 21/27 > 7/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/27 and 7/12 21/27 and 14/12 21/54 and 7/12 21/27 and 7/24 63/27 and 7/12 21/27 and 21/12 21/81 and 7/12 21/27 and 7/36 21/27 and 35/12 21/27 and 7/60 21/27 and 49/12 21/27 and 7/84