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Answers.everydaycalculation.com » Compare fractions

Compare 7/21 and 4/15

7/21 is greater than 4/15

Steps for comparing fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 15 is 105

    Next, find the equivalent fraction of both fractional numbers with denominator 105
  2. For the 1st fraction, since 21 × 5 = 105,
    7/21 = 7 × 5/21 × 5 = 35/105
  3. Likewise, for the 2nd fraction, since 15 × 7 = 105,
    4/15 = 4 × 7/15 × 7 = 28/105
  4. Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
  5. 35/105 > 28/105 or 7/21 > 4/15

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