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Answers.everydaycalculation.com » Compare fractions

Compare 45/15 and 72/18

1st number: 3 0/15, 2nd number: 4 0/18

45/15 is smaller than 72/18

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,
    45/15 = 45 × 6/15 × 6 = 270/90
  3. Likewise, for the 2nd fraction, since 18 × 5 = 90,
    72/18 = 72 × 5/18 × 5 = 360/90
  4. Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
  5. 270/90 < 360/90 or 45/15 < 72/18

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