Compare 2/21 and 7/30
2/21 is smaller than 7/30
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 30 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 21 × 10 = 210,
2/21 = 2 × 10/21 × 10 = 20/210 - Likewise, for the 2nd fraction, since 30 × 7 = 210,
7/30 = 7 × 7/30 × 7 = 49/210 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 20/210 < 49/210 or 2/21 < 7/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/21 and 7/30 2/21 and 14/30 2/42 and 7/30 2/21 and 7/60 6/21 and 7/30 2/21 and 21/30 2/63 and 7/30 2/21 and 7/90 10/21 and 7/30 2/21 and 35/30 14/21 and 7/30 2/21 and 49/30