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Answers.everydaycalculation.com » Compare fractions

Compare 90/7 and 21/18

1st number: 12 6/7, 2nd number: 1 3/18

90/7 is greater than 21/18

Steps for comparing fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 7 and 18 is 126

    Next, find the equivalent fraction of both fractional numbers with denominator 126
  2. For the 1st fraction, since 7 × 18 = 126,
    90/7 = 90 × 18/7 × 18 = 1620/126
  3. Likewise, for the 2nd fraction, since 18 × 7 = 126,
    21/18 = 21 × 7/18 × 7 = 147/126
  4. Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
  5. 1620/126 > 147/126 or 90/7 > 21/18

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