Compare 63/30 and 21/18
1st number: 2 3/30, 2nd number: 1 3/18
63/30 is greater than 21/18
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 18 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 30 × 3 = 90,
63/30 = 63 × 3/30 × 3 = 189/90 - Likewise, for the 2nd fraction, since 18 × 5 = 90,
21/18 = 21 × 5/18 × 5 = 105/90 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 189/90 > 105/90 or 63/30 > 21/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/30 and 42/18 63/60 and 21/18 63/30 and 21/36 63/30 and 63/18 63/90 and 21/18 63/30 and 21/54 63/30 and 21/90