Compare 81/7 and 84/90
1st number: 11 4/7, 2nd number: 84/90
81/7 is greater than 84/90
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 90 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 7 × 90 = 630,
81/7 = 81 × 90/7 × 90 = 7290/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
84/90 = 84 × 7/90 × 7 = 588/630 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 7290/630 > 588/630 or 81/7 > 84/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/14 and 84/90 81/21 and 84/90 81/35 and 84/90 81/49 and 84/90