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Answers.everydaycalculation.com » Compare fractions

Compare 30/98 and 21/81

30/98 is greater than 21/81

Steps for comparing fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 98 and 81 is 7938

    Next, find the equivalent fraction of both fractional numbers with denominator 7938
  2. For the 1st fraction, since 98 × 81 = 7938,
    30/98 = 30 × 81/98 × 81 = 2430/7938
  3. Likewise, for the 2nd fraction, since 81 × 98 = 7938,
    21/81 = 21 × 98/81 × 98 = 2058/7938
  4. Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
  5. 2430/7938 > 2058/7938 or 30/98 > 21/81

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