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Answers.everydaycalculation.com » Compare fractions

Compare 30/21 and 3/7

1st number: 1 9/21, 2nd number: 3/7

30/21 is greater than 3/7

Steps for comparing fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 7 is 21

    Next, find the equivalent fraction of both fractional numbers with denominator 21
  2. For the 1st fraction, since 21 × 1 = 21,
    30/21 = 30 × 1/21 × 1 = 30/21
  3. Likewise, for the 2nd fraction, since 7 × 3 = 21,
    3/7 = 3 × 3/7 × 3 = 9/21
  4. Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
  5. 30/21 > 9/21 or 30/21 > 3/7

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