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Answers.everydaycalculation.com » Compare fractions

Compare 5/12 and 21/81

5/12 is greater than 21/81

Steps for comparing fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 12 and 81 is 324

    Next, find the equivalent fraction of both fractional numbers with denominator 324
  2. For the 1st fraction, since 12 × 27 = 324,
    5/12 = 5 × 27/12 × 27 = 135/324
  3. Likewise, for the 2nd fraction, since 81 × 4 = 324,
    21/81 = 21 × 4/81 × 4 = 84/324
  4. Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
  5. 135/324 > 84/324 or 5/12 > 21/81

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