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Subtract 3/81 from 45/4

1st number: 11 1/4, 2nd number: 3/81

45/4 - 3/81 is 1211/108.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 4 and 81 is 324

    Next, find the equivalent fraction of both fractional numbers with denominator 324
  2. For the 1st fraction, since 4 × 81 = 324,
    45/4 = 45 × 81/4 × 81 = 3645/324
  3. Likewise, for the 2nd fraction, since 81 × 4 = 324,
    3/81 = 3 × 4/81 × 4 = 12/324
  4. Subtract the two like fractions:
    3645/324 - 12/324 = 3645 - 12/324 = 3633/324
  5. After reducing the fraction, the answer is 1211/108
  6. In mixed form: 1123/108

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