Compare 12/30 and 49/21
1st number: 12/30, 2nd number: 2 7/21
12/30 is smaller than 49/21
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 21 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 30 × 7 = 210,
12/30 = 12 × 7/30 × 7 = 84/210 - Likewise, for the 2nd fraction, since 21 × 10 = 210,
49/21 = 49 × 10/21 × 10 = 490/210 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 84/210 < 490/210 or 12/30 < 49/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/30 and 49/21 12/30 and 98/21 12/60 and 49/21 12/30 and 49/42 36/30 and 49/21 12/90 and 49/21 12/30 and 49/63 60/30 and 49/21 84/30 and 49/21