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Answers.everydaycalculation.com » Compare fractions

Compare 72/21 and 90/60

1st number: 3 9/21, 2nd number: 1 30/60

72/21 is greater than 90/60

Steps for comparing fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 60 is 420
  2. For the 1st fraction, since 21 × 20 = 420,
    72/21 = 72 × 20/21 × 20 = 1440/420
  3. Likewise, for the 2nd fraction, since 60 × 7 = 420,
    90/60 = 90 × 7/60 × 7 = 630/420
  4. Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
  5. 1440/420 > 630/420 or 72/21 > 90/60

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