Compare 12/81 and 7/15
12/81 is smaller than 7/15
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 15 is 405
Next, find the equivalent fraction of both fractional numbers with denominator 405 - For the 1st fraction, since 81 × 5 = 405,
12/81 = 12 × 5/81 × 5 = 60/405 - Likewise, for the 2nd fraction, since 15 × 27 = 405,
7/15 = 7 × 27/15 × 27 = 189/405 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 60/405 < 189/405 or 12/81 < 7/15
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