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Subtract 21/81 from 84/2

1st number: 42 0/2, 2nd number: 21/81

84/2 - 21/81 is 1127/27.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 2 and 81 is 162
  2. For the 1st fraction, since 2 × 81 = 162,
    84/2 = 84 × 81/2 × 81 = 6804/162
  3. Likewise, for the 2nd fraction, since 81 × 2 = 162,
    21/81 = 21 × 2/81 × 2 = 42/162
  4. Subtract the two fractions:
    6804/162 - 42/162 = 6804 - 42/162 = 6762/162
  5. After reducing the fraction, the answer is 1127/27
  6. In mixed form: 4120/27

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