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Answers.everydaycalculation.com » Compare fractions

Compare 20/21 and 84/28

1st number: 20/21, 2nd number: 3 0/28

20/21 is smaller than 84/28

Steps for comparing fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 28 is 84

    Next, find the equivalent fraction of both fractional numbers with denominator 84
  2. For the 1st fraction, since 21 × 4 = 84,
    20/21 = 20 × 4/21 × 4 = 80/84
  3. Likewise, for the 2nd fraction, since 28 × 3 = 84,
    84/28 = 84 × 3/28 × 3 = 252/84
  4. Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
  5. 80/84 < 252/84 or 20/21 < 84/28

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