Compare 9/45 and 63/21
1st number: 9/45, 2nd number: 3 0/21
9/45 is smaller than 63/21
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 21 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 45 × 7 = 315,
9/45 = 9 × 7/45 × 7 = 63/315 - Likewise, for the 2nd fraction, since 21 × 15 = 315,
63/21 = 63 × 15/21 × 15 = 945/315 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 63/315 < 945/315 or 9/45 < 63/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/45 and 63/21 9/90 and 63/21 9/45 and 63/42 27/45 and 63/21 63/45 and 63/21