Compare 63/90 and 49/21
1st number: 63/90, 2nd number: 2 7/21
63/90 is smaller than 49/21
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 21 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 90 × 7 = 630,
63/90 = 63 × 7/90 × 7 = 441/630 - Likewise, for the 2nd fraction, since 21 × 30 = 630,
49/21 = 49 × 30/21 × 30 = 1470/630 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 441/630 < 1470/630 or 63/90 < 49/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/90 and 98/21 63/90 and 49/42 63/90 and 49/63