Compare 7/12 and 21/30
7/12 is smaller than 21/30
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 30 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 12 × 5 = 60,
7/12 = 7 × 5/12 × 5 = 35/60 - Likewise, for the 2nd fraction, since 30 × 2 = 60,
21/30 = 21 × 2/30 × 2 = 42/60 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 35/60 < 42/60 or 7/12 < 21/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/12 and 21/30 7/12 and 42/30 7/24 and 21/30 7/12 and 21/60 21/12 and 21/30 7/12 and 63/30 7/36 and 21/30 7/12 and 21/90 35/12 and 21/30 7/60 and 21/30 49/12 and 21/30 7/84 and 21/30