Compare 7/84 and 7/81
7/84 is smaller than 7/81
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 81 is 2268
Next, find the equivalent fraction of both fractional numbers with denominator 2268 - For the 1st fraction, since 84 × 27 = 2268,
7/84 = 7 × 27/84 × 27 = 189/2268 - Likewise, for the 2nd fraction, since 81 × 28 = 2268,
7/81 = 7 × 28/81 × 28 = 196/2268 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 189/2268 < 196/2268 or 7/84 < 7/81
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/84 and 7/81 7/84 and 14/81 21/84 and 7/81 7/84 and 21/81 35/84 and 7/81 7/84 and 35/81 49/84 and 7/81 7/84 and 49/81