Compare 21/75 and 9/30
21/75 is smaller than 9/30
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 30 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 30 × 5 = 150,
9/30 = 9 × 5/30 × 5 = 45/150 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 42/150 < 45/150 or 21/75 < 9/30
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 9/30 21/75 and 18/30 21/75 and 9/60 63/75 and 9/30 21/75 and 27/30 21/75 and 9/90 21/75 and 45/30 21/75 and 63/30