Compare 50/12 and 80/21
1st number: 4 2/12, 2nd number: 3 17/21
50/12 is greater than 80/21
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,
50/12 = 50 × 7/12 × 7 = 350/84 - Likewise, for the 2nd fraction, since 21 × 4 = 84,
80/21 = 80 × 4/21 × 4 = 320/84 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 350/84 > 320/84 or 50/12 > 80/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/24 and 80/21 50/12 and 80/42 50/36 and 80/21 50/12 and 80/63 50/60 and 80/21 50/84 and 80/21