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Answers.everydaycalculation.com » Compare fractions

Compare 56/42 and 21/80

1st number: 1 14/42, 2nd number: 21/80

56/42 is greater than 21/80

Steps for comparing fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 80 is 1680

    Next, find the equivalent fraction of both fractional numbers with denominator 1680
  2. For the 1st fraction, since 42 × 40 = 1680,
    56/42 = 56 × 40/42 × 40 = 2240/1680
  3. Likewise, for the 2nd fraction, since 80 × 21 = 1680,
    21/80 = 21 × 21/80 × 21 = 441/1680
  4. Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
  5. 2240/1680 > 441/1680 or 56/42 > 21/80

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