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Everydaycalculation.com » Answers » Compare fractions

Compare 45/3 and 81/7

1st number: 15 0/3, 2nd number: 11 4/7

45/3 is greater than 81/7

Steps for comparing fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 3 and 7 is 21
  2. For the 1st fraction, since 3 × 7 = 21,
    45/3 = 45 × 7/3 × 7 = 315/21
  3. Likewise, for the 2nd fraction, since 7 × 3 = 21,
    81/7 = 81 × 3/7 × 3 = 243/21
  4. Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
  5. 315/21 > 243/21 or 45/3 > 81/7

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