Compare 21/75 and 15/10
1st number: 21/75, 2nd number: 1 5/10
21/75 is smaller than 15/10
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 10 is 150
Next, find the equivalent fraction of both fractional numbers with denominator 150 - For the 1st fraction, since 75 × 2 = 150,
21/75 = 21 × 2/75 × 2 = 42/150 - Likewise, for the 2nd fraction, since 10 × 15 = 150,
15/10 = 15 × 15/10 × 15 = 225/150 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 42/150 < 225/150 or 21/75 < 15/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/75 and 15/10 21/75 and 30/10 21/75 and 15/20 63/75 and 15/10 21/75 and 45/10 21/75 and 15/30 21/75 and 75/10 21/75 and 15/50 21/75 and 15/70