Compare 15/30 and 84/81
1st number: 15/30, 2nd number: 1 3/81
15/30 is smaller than 84/81
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 81 is 810
Next, find the equivalent fraction of both fractional numbers with denominator 810 - For the 1st fraction, since 30 × 27 = 810,
15/30 = 15 × 27/30 × 27 = 405/810 - Likewise, for the 2nd fraction, since 81 × 10 = 810,
84/81 = 84 × 10/81 × 10 = 840/810 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 405/810 < 840/810 or 15/30 < 84/81
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