Compare 12/21 and 84/5
1st number: 12/21, 2nd number: 16 4/5
12/21 is smaller than 84/5
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 5 is 105
Next, find the equivalent fraction of both fractional numbers with denominator 105 - For the 1st fraction, since 21 × 5 = 105,
12/21 = 12 × 5/21 × 5 = 60/105 - Likewise, for the 2nd fraction, since 5 × 21 = 105,
84/5 = 84 × 21/5 × 21 = 1764/105 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 60/105 < 1764/105 or 12/21 < 84/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/21 and 84/5 12/42 and 84/5 12/21 and 84/10 36/21 and 84/5 12/63 and 84/5 12/21 and 84/15 60/21 and 84/5 12/21 and 84/25 84/21 and 84/5 12/21 and 84/35