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Compare 45/21 and 81/7

1st number: 2 3/21, 2nd number: 11 4/7

45/21 is smaller than 81/7

Steps for comparing fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 7 is 21
  2. For the 1st fraction, since 21 × 1 = 21,
    45/21 = 45 × 1/21 × 1 = 45/21
  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. 45/21 < 243/21 or 45/21 < 81/7

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