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Answers.everydaycalculation.com » Compare fractions

Compare 20/15 and 20/18

1st number: 1 5/15, 2nd number: 1 2/18

20/15 is greater than 20/18

Steps for comparing fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 15 and 18 is 90

    Next, find the equivalent fraction of both fractional numbers with denominator 90
  2. For the 1st fraction, since 15 × 6 = 90,
    20/15 = 20 × 6/15 × 6 = 120/90
  3. Likewise, for the 2nd fraction, since 18 × 5 = 90,
    20/18 = 20 × 5/18 × 5 = 100/90
  4. Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
  5. 120/90 > 100/90 or 20/15 > 20/18

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