Compare 21/84 and 90/25
1st number: 21/84, 2nd number: 3 15/25
21/84 is smaller than 90/25
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 25 is 2100
Next, find the equivalent fraction of both fractional numbers with denominator 2100 - For the 1st fraction, since 84 × 25 = 2100,
21/84 = 21 × 25/84 × 25 = 525/2100 - Likewise, for the 2nd fraction, since 25 × 84 = 2100,
90/25 = 90 × 84/25 × 84 = 7560/2100 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 525/2100 < 7560/2100 or 21/84 < 90/25
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/84 and 90/25 21/84 and 90/50 63/84 and 90/25 21/84 and 90/75