Compare 12/21 and 75/7
1st number: 12/21, 2nd number: 10 5/7
12/21 is smaller than 75/7
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 7 is 21
Next, find the equivalent fraction of both fractional numbers with denominator 21 - For the 1st fraction, since 21 × 1 = 21,
12/21 = 12 × 1/21 × 1 = 12/21 - Likewise, for the 2nd fraction, since 7 × 3 = 21,
75/7 = 75 × 3/7 × 3 = 225/21 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 12/21 < 225/21 or 12/21 < 75/7
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 75/7 12/42 and 75/7 12/21 and 75/14 36/21 and 75/7 12/63 and 75/7 12/21 and 75/21 60/21 and 75/7 12/21 and 75/35 84/21 and 75/7 12/21 and 75/49