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Subtract 3/81 from 9/4

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

9/4 - 3/81 is 239/108.

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,
    9/4 = 9 × 81/4 × 81 = 729/324
  3. Likewise, for the 2nd fraction, since 81 × 4 = 324,
    3/81 = 3 × 4/81 × 4 = 12/324
  4. Subtract the two like fractions:
    729/324 - 12/324 = 729 - 12/324 = 717/324
  5. After reducing the fraction, the answer is 239/108
  6. In mixed form: 223/108

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