Compare 30/20 and 21/75
1st number: 1 10/20, 2nd number: 21/75
30/20 is greater than 21/75
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 75 is 300
Next, find the equivalent fraction of both fractional numbers with denominator 300 - For the 1st fraction, since 20 × 15 = 300,
30/20 = 30 × 15/20 × 15 = 450/300 - Likewise, for the 2nd fraction, since 75 × 4 = 300,
21/75 = 21 × 4/75 × 4 = 84/300 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 450/300 > 84/300 or 30/20 > 21/75
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/20 and 21/75 30/20 and 42/75 30/40 and 21/75 90/20 and 21/75 30/20 and 63/75 30/60 and 21/75