Compare 80/12 and 5/21
1st number: 6 8/12, 2nd number: 5/21
80/12 is greater than 5/21
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 21 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 12 × 7 = 84,
80/12 = 80 × 7/12 × 7 = 560/84 - Likewise, for the 2nd fraction, since 21 × 4 = 84,
5/21 = 5 × 4/21 × 4 = 20/84 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 560/84 > 20/84 or 80/12 > 5/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/12 and 10/21 80/24 and 5/21 80/12 and 5/42 80/12 and 15/21 80/36 and 5/21 80/12 and 5/63 80/12 and 25/21 80/60 and 5/21 80/12 and 35/21 80/84 and 5/21