Compare 21/75 and 18/54
21/75 is smaller than 18/54
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 54 is 1350
Next, find the equivalent fraction of both fractional numbers with denominator 1350 - For the 1st fraction, since 75 × 18 = 1350,
21/75 = 21 × 18/75 × 18 = 378/1350 - Likewise, for the 2nd fraction, since 54 × 25 = 1350,
18/54 = 18 × 25/54 × 25 = 450/1350 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 378/1350 < 450/1350 or 21/75 < 18/54
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 18/54 21/75 and 36/54 63/75 and 18/54 21/75 and 90/54