Compare 63/18 and 21/5
1st number: 3 9/18, 2nd number: 4 1/5
63/18 is smaller than 21/5
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 5 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 18 × 5 = 90,
63/18 = 63 × 5/18 × 5 = 315/90 - Likewise, for the 2nd fraction, since 5 × 18 = 90,
21/5 = 21 × 18/5 × 18 = 378/90 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 315/90 < 378/90 or 63/18 < 21/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/18 and 42/5 63/36 and 21/5 63/18 and 21/10 63/18 and 63/5 63/54 and 21/5 63/18 and 21/15 63/90 and 21/5 63/18 and 21/25 63/18 and 21/35