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Answers.everydaycalculation.com » Compare fractions

Compare 90/84 and 42/40

1st number: 1 6/84, 2nd number: 1 2/40

90/84 is greater than 42/40

Steps for comparing fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 84 and 40 is 840

    Next, find the equivalent fraction of both fractional numbers with denominator 840
  2. For the 1st fraction, since 84 × 10 = 840,
    90/84 = 90 × 10/84 × 10 = 900/840
  3. Likewise, for the 2nd fraction, since 40 × 21 = 840,
    42/40 = 42 × 21/40 × 21 = 882/840
  4. Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
  5. 900/840 > 882/840 or 90/84 > 42/40

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