Compare 12/21 and 75/9
1st number: 12/21, 2nd number: 8 3/9
12/21 is smaller than 75/9
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 9 is 63
Next, find the equivalent fraction of both fractional numbers with denominator 63 - For the 1st fraction, since 21 × 3 = 63,
12/21 = 12 × 3/21 × 3 = 36/63 - Likewise, for the 2nd fraction, since 9 × 7 = 63,
75/9 = 75 × 7/9 × 7 = 525/63 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 36/63 < 525/63 or 12/21 < 75/9
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 75/9 12/42 and 75/9 12/21 and 75/18 36/21 and 75/9 12/63 and 75/9 12/21 and 75/27 60/21 and 75/9 12/21 and 75/45 84/21 and 75/9 12/21 and 75/63