Compare 28/20 and 2/21
1st number: 1 8/20, 2nd number: 2/21
28/20 is greater than 2/21
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 21 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 20 × 21 = 420,
28/20 = 28 × 21/20 × 21 = 588/420 - Likewise, for the 2nd fraction, since 21 × 20 = 420,
2/21 = 2 × 20/21 × 20 = 40/420 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 588/420 > 40/420 or 28/20 > 2/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/20 and 2/21 28/20 and 4/21 28/40 and 2/21 28/20 and 2/42 84/20 and 2/21 28/20 and 6/21 28/60 and 2/21 28/20 and 2/63 28/20 and 10/21 28/20 and 14/21