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Answers.everydaycalculation.com » Compare fractions

Compare 42/84 and 40/72

42/84 is smaller than 40/72

Steps for comparing fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 84 and 72 is 504

    Next, find the equivalent fraction of both fractional numbers with denominator 504
  2. For the 1st fraction, since 84 × 6 = 504,
    42/84 = 42 × 6/84 × 6 = 252/504
  3. Likewise, for the 2nd fraction, since 72 × 7 = 504,
    40/72 = 40 × 7/72 × 7 = 280/504
  4. Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
  5. 252/504 < 280/504 or 42/84 < 40/72

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