Answers

Compare 28/81 and 15/42

28/81 is smaller than 15/42

Steps for comparing fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 81 and 42 is 1134
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1134
2. For the 1st fraction, since 81 × 14 = 1134,
   28/81 = 28 × 14/81 × 14 = 392/1134
3. Likewise, for the 2nd fraction, since 42 × 27 = 1134,
   15/42 = 15 × 27/42 × 27 = 405/1134
4. Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
5. 392/1134 < 405/1134 or 28/81 < 15/42

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