Compare 21/18 and 32/30
1st number: 1 3/18, 2nd number: 1 2/30
21/18 is greater than 32/30
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 30 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 18 × 5 = 90,
21/18 = 21 × 5/18 × 5 = 105/90 - Likewise, for the 2nd fraction, since 30 × 3 = 90,
32/30 = 32 × 3/30 × 3 = 96/90 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 105/90 > 96/90 or 21/18 > 32/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/18 and 32/30 21/18 and 64/30 21/36 and 32/30 21/18 and 32/60 63/18 and 32/30 21/18 and 96/30 21/54 and 32/30 21/18 and 32/90 21/90 and 32/30