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Answers.everydaycalculation.com » Compare fractions

Compare 3/15 and 21/63

3/15 is smaller than 21/63

Steps for comparing fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 15 and 63 is 315

    Next, find the equivalent fraction of both fractional numbers with denominator 315
  2. For the 1st fraction, since 15 × 21 = 315,
    3/15 = 3 × 21/15 × 21 = 63/315
  3. Likewise, for the 2nd fraction, since 63 × 5 = 315,
    21/63 = 21 × 5/63 × 5 = 105/315
  4. Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
  5. 63/315 < 105/315 or 3/15 < 21/63

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