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Answers.everydaycalculation.com » Compare fractions

Compare 42/84 and 30/70

42/84 is greater than 30/70

Steps for comparing fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 84 and 70 is 420

    Next, find the equivalent fraction of both fractional numbers with denominator 420
  2. For the 1st fraction, since 84 × 5 = 420,
    42/84 = 42 × 5/84 × 5 = 210/420
  3. Likewise, for the 2nd fraction, since 70 × 6 = 420,
    30/70 = 30 × 6/70 × 6 = 180/420
  4. Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
  5. 210/420 > 180/420 or 42/84 > 30/70

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