Compare 3/5 and 21/84
3/5 is greater than 21/84
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 84 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 5 × 84 = 420,
3/5 = 3 × 84/5 × 84 = 252/420 - Likewise, for the 2nd fraction, since 84 × 5 = 420,
21/84 = 21 × 5/84 × 5 = 105/420 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 252/420 > 105/420 or 3/5 > 21/84
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/5 and 21/84 3/5 and 42/84 3/10 and 21/84 9/5 and 21/84 3/5 and 63/84 3/15 and 21/84 15/5 and 21/84 3/25 and 21/84 21/5 and 21/84 3/35 and 21/84