Compare 21/28 and 1/5
21/28 is greater than 1/5
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 5 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 28 × 5 = 140,
21/28 = 21 × 5/28 × 5 = 105/140 - Likewise, for the 2nd fraction, since 5 × 28 = 140,
1/5 = 1 × 28/5 × 28 = 28/140 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 105/140 > 28/140 or 21/28 > 1/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/28 and 1/5 21/28 and 2/5 21/56 and 1/5 21/28 and 1/10 63/28 and 1/5 21/28 and 3/5 21/84 and 1/5 21/28 and 1/15 21/28 and 1/25 21/28 and 7/5 21/28 and 1/35