Compare 28/21 and 25/12
1st number: 1 7/21, 2nd number: 2 1/12
28/21 is smaller than 25/12
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 12 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 21 × 4 = 84,
28/21 = 28 × 4/21 × 4 = 112/84 - Likewise, for the 2nd fraction, since 12 × 7 = 84,
25/12 = 25 × 7/12 × 7 = 175/84 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 112/84 < 175/84 or 28/21 < 25/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/21 and 25/12 28/21 and 50/12 28/42 and 25/12 28/21 and 25/24 84/21 and 25/12 28/21 and 75/12 28/63 and 25/12 28/21 and 25/36 28/21 and 25/60 28/21 and 25/84