Compare 21/2 and 63/7
1st number: 10 1/2, 2nd number: 9 0/7
21/2 is greater than 63/7
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 7 is 14
Next, find the equivalent fraction of both fractional numbers with denominator 14 - For the 1st fraction, since 2 × 7 = 14,
21/2 = 21 × 7/2 × 7 = 147/14 - Likewise, for the 2nd fraction, since 7 × 2 = 14,
63/7 = 63 × 2/7 × 2 = 126/14 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 147/14 > 126/14 or 21/2 > 63/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/2 and 63/7 21/4 and 63/7 21/2 and 63/14 63/2 and 63/7 21/6 and 63/7 21/2 and 63/21 21/10 and 63/7 21/2 and 63/35 21/14 and 63/7 21/2 and 63/49