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Answers.everydaycalculation.com » Compare fractions

Compare 15/21 and 40/84

15/21 is greater than 40/84

Steps for comparing fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 84 is 84

    Next, find the equivalent fraction of both fractional numbers with denominator 84
  2. For the 1st fraction, since 21 × 4 = 84,
    15/21 = 15 × 4/21 × 4 = 60/84
  3. Likewise, for the 2nd fraction, since 84 × 1 = 84,
    40/84 = 40 × 1/84 × 1 = 40/84
  4. Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
  5. 60/84 > 40/84 or 15/21 > 40/84

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