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Answers.everydaycalculation.com » Compare fractions

Compare 20/21 and 70/42

1st number: 20/21, 2nd number: 1 28/42

20/21 is smaller than 70/42

Steps for comparing fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 42 is 42

    Next, find the equivalent fraction of both fractional numbers with denominator 42
  2. For the 1st fraction, since 21 × 2 = 42,
    20/21 = 20 × 2/21 × 2 = 40/42
  3. Likewise, for the 2nd fraction, since 42 × 1 = 42,
    70/42 = 70 × 1/42 × 1 = 70/42
  4. Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
  5. 40/42 < 70/42 or 20/21 < 70/42

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