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Answers.everydaycalculation.com » Compare fractions

Compare 90/42 and 21/9

1st number: 2 6/42, 2nd number: 2 3/9

90/42 is smaller than 21/9

Steps for comparing fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 9 is 126

    Next, find the equivalent fraction of both fractional numbers with denominator 126
  2. For the 1st fraction, since 42 × 3 = 126,
    90/42 = 90 × 3/42 × 3 = 270/126
  3. Likewise, for the 2nd fraction, since 9 × 14 = 126,
    21/9 = 21 × 14/9 × 14 = 294/126
  4. Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
  5. 270/126 < 294/126 or 90/42 < 21/9

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