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Subtract 20/81 from 84/54

1st number: 1 30/54, 2nd number: 20/81

84/54 - 20/81 is 106/81.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 54 and 81 is 162
  2. For the 1st fraction, since 54 × 3 = 162,
    84/54 = 84 × 3/54 × 3 = 252/162
  3. Likewise, for the 2nd fraction, since 81 × 2 = 162,
    20/81 = 20 × 2/81 × 2 = 40/162
  4. Subtract the two fractions:
    252/162 - 40/162 = 252 - 40/162 = 212/162
  5. After reducing the fraction, the answer is 106/81
  6. In mixed form: 125/81

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