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Answers.everydaycalculation.com » Compare fractions

Compare 90/21 and 72/6

1st number: 4 6/21, 2nd number: 12 0/6

90/21 is smaller than 72/6

Steps for comparing fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 6 is 42

    Next, find the equivalent fraction of both fractional numbers with denominator 42
  2. For the 1st fraction, since 21 × 2 = 42,
    90/21 = 90 × 2/21 × 2 = 180/42
  3. Likewise, for the 2nd fraction, since 6 × 7 = 42,
    72/6 = 72 × 7/6 × 7 = 504/42
  4. Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
  5. 180/42 < 504/42 or 90/21 < 72/6

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