Compare 90/21 and 25/72
1st number: 4 6/21, 2nd number: 25/72
90/21 is greater than 25/72
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 72 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 21 × 24 = 504,
90/21 = 90 × 24/21 × 24 = 2160/504 - Likewise, for the 2nd fraction, since 72 × 7 = 504,
25/72 = 25 × 7/72 × 7 = 175/504 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 2160/504 > 175/504 or 90/21 > 25/72
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 50/72 90/42 and 25/72 90/21 and 75/72 90/63 and 25/72