Compare 80/21 and 75/8
1st number: 3 17/21, 2nd number: 9 3/8
80/21 is smaller than 75/8
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 8 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 21 × 8 = 168,
80/21 = 80 × 8/21 × 8 = 640/168 - Likewise, for the 2nd fraction, since 8 × 21 = 168,
75/8 = 75 × 21/8 × 21 = 1575/168 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 640/168 < 1575/168 or 80/21 < 75/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/42 and 75/8 80/21 and 75/16 80/63 and 75/8 80/21 and 75/24 80/21 and 75/40 80/21 and 75/56