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Answers.everydaycalculation.com » Compare fractions

Compare 36/21 and 81/80

1st number: 1 15/21, 2nd number: 1 1/80

36/21 is greater than 81/80

Steps for comparing fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 80 is 1680

    Next, find the equivalent fraction of both fractional numbers with denominator 1680
  2. For the 1st fraction, since 21 × 80 = 1680,
    36/21 = 36 × 80/21 × 80 = 2880/1680
  3. Likewise, for the 2nd fraction, since 80 × 21 = 1680,
    81/80 = 81 × 21/80 × 21 = 1701/1680
  4. Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
  5. 2880/1680 > 1701/1680 or 36/21 > 81/80

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