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Answers.everydaycalculation.com » Compare fractions

Compare 21/4 and 8/42

1st number: 5 1/4, 2nd number: 8/42

21/4 is greater than 8/42

Steps for comparing fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 4 and 42 is 84

    Next, find the equivalent fraction of both fractional numbers with denominator 84
  2. For the 1st fraction, since 4 × 21 = 84,
    21/4 = 21 × 21/4 × 21 = 441/84
  3. Likewise, for the 2nd fraction, since 42 × 2 = 84,
    8/42 = 8 × 2/42 × 2 = 16/84
  4. Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
  5. 441/84 > 16/84 or 21/4 > 8/42

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