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Answers.everydaycalculation.com » Compare fractions

Compare 18/42 and 90/12

1st number: 18/42, 2nd number: 7 6/12

18/42 is smaller than 90/12

Steps for comparing fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 12 is 84

    Next, find the equivalent fraction of both fractional numbers with denominator 84
  2. For the 1st fraction, since 42 × 2 = 84,
    18/42 = 18 × 2/42 × 2 = 36/84
  3. Likewise, for the 2nd fraction, since 12 × 7 = 84,
    90/12 = 90 × 7/12 × 7 = 630/84
  4. Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
  5. 36/84 < 630/84 or 18/42 < 90/12

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