Compare 3/81 and 15/84
3/81 is smaller than 15/84
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 84 is 2268
Next, find the equivalent fraction of both fractional numbers with denominator 2268 - For the 1st fraction, since 81 × 28 = 2268,
3/81 = 3 × 28/81 × 28 = 84/2268 - Likewise, for the 2nd fraction, since 84 × 27 = 2268,
15/84 = 15 × 27/84 × 27 = 405/2268 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 84/2268 < 405/2268 or 3/81 < 15/84
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