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Answers.everydaycalculation.com » Compare fractions

Compare 75/21 and 90/8

1st number: 3 12/21, 2nd number: 11 2/8

75/21 is smaller than 90/8

Steps for comparing fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 8 is 168

    Next, find the equivalent fraction of both fractional numbers with denominator 168
  2. For the 1st fraction, since 21 × 8 = 168,
    75/21 = 75 × 8/21 × 8 = 600/168
  3. Likewise, for the 2nd fraction, since 8 × 21 = 168,
    90/8 = 90 × 21/8 × 21 = 1890/168
  4. Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
  5. 600/168 < 1890/168 or 75/21 < 90/8

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