Compare 21/36 and 7/30
21/36 is greater than 7/30
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 30 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 36 × 5 = 180,
21/36 = 21 × 5/36 × 5 = 105/180 - Likewise, for the 2nd fraction, since 30 × 6 = 180,
7/30 = 7 × 6/30 × 6 = 42/180 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 105/180 > 42/180 or 21/36 > 7/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/36 and 7/30 21/36 and 14/30 21/72 and 7/30 21/36 and 7/60 63/36 and 7/30 21/36 and 21/30 21/36 and 7/90 21/36 and 35/30 21/36 and 49/30