Compare 45/21 and 5/90
1st number: 2 3/21, 2nd number: 5/90
45/21 is greater than 5/90
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 90 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 21 × 30 = 630,
45/21 = 45 × 30/21 × 30 = 1350/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
5/90 = 5 × 7/90 × 7 = 35/630 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 1350/630 > 35/630 or 45/21 > 5/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/21 and 5/90 45/21 and 10/90 45/42 and 5/90 45/21 and 15/90 45/63 and 5/90 45/21 and 25/90 45/21 and 35/90