Compare 21/42 and 6/28
21/42 is greater than 6/28
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 28 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 42 × 2 = 84,
21/42 = 21 × 2/42 × 2 = 42/84 - Likewise, for the 2nd fraction, since 28 × 3 = 84,
6/28 = 6 × 3/28 × 3 = 18/84 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 42/84 > 18/84 or 21/42 > 6/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 21/42 and 12/28 21/84 and 6/28 21/42 and 6/56 63/42 and 6/28 21/42 and 18/28 21/42 and 6/84 21/42 and 30/28 21/42 and 42/28