Compare 90/84 and 9/20
1st number: 1 6/84, 2nd number: 9/20
90/84 is greater than 9/20
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 20 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 84 × 5 = 420,
90/84 = 90 × 5/84 × 5 = 450/420 - Likewise, for the 2nd fraction, since 20 × 21 = 420,
9/20 = 9 × 21/20 × 21 = 189/420 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 450/420 > 189/420 or 90/84 > 9/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/84 and 18/20 90/84 and 9/40 90/84 and 27/20 90/84 and 9/60 90/84 and 45/20 90/84 and 63/20