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Answers.everydaycalculation.com » Compare fractions

Compare 40/18 and 18/21

1st number: 2 4/18, 2nd number: 18/21

40/18 is greater than 18/21

Steps for comparing fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 18 and 21 is 126

    Next, find the equivalent fraction of both fractional numbers with denominator 126
  2. For the 1st fraction, since 18 × 7 = 126,
    40/18 = 40 × 7/18 × 7 = 280/126
  3. Likewise, for the 2nd fraction, since 21 × 6 = 126,
    18/21 = 18 × 6/21 × 6 = 108/126
  4. Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
  5. 280/126 > 108/126 or 40/18 > 18/21

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