Compare 20/21 and 7/84
20/21 is greater than 7/84
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 84 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 21 × 4 = 84,
20/21 = 20 × 4/21 × 4 = 80/84 - Likewise, for the 2nd fraction, since 84 × 1 = 84,
7/84 = 7 × 1/84 × 1 = 7/84 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 80/84 > 7/84 or 20/21 > 7/84
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/21 and 7/84 20/21 and 14/84 20/42 and 7/84 60/21 and 7/84 20/21 and 21/84 20/63 and 7/84 20/21 and 35/84 20/21 and 49/84