Compare 50/45 and 63/21
1st number: 1 5/45, 2nd number: 3 0/21
50/45 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,
50/45 = 50 × 7/45 × 7 = 350/315 - 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
- 350/315 < 945/315 or 50/45 < 63/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/90 and 63/21 50/45 and 63/42