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Answers.everydaycalculation.com » Compare fractions

Compare 28/45 and 21/30

28/45 is smaller than 21/30

Steps for comparing fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 45 and 30 is 90

    Next, find the equivalent fraction of both fractional numbers with denominator 90
  2. For the 1st fraction, since 45 × 2 = 90,
    28/45 = 28 × 2/45 × 2 = 56/90
  3. Likewise, for the 2nd fraction, since 30 × 3 = 90,
    21/30 = 21 × 3/30 × 3 = 63/90
  4. Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
  5. 56/90 < 63/90 or 28/45 < 21/30

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