Compare 5/84 and 21/30
5/84 is smaller than 21/30
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 30 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 84 × 5 = 420,
5/84 = 5 × 5/84 × 5 = 25/420 - Likewise, for the 2nd fraction, since 30 × 14 = 420,
21/30 = 21 × 14/30 × 14 = 294/420 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 25/420 < 294/420 or 5/84 < 21/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/84 and 21/30 5/84 and 42/30 5/84 and 21/60 15/84 and 21/30 5/84 and 63/30 5/84 and 21/90 25/84 and 21/30 35/84 and 21/30