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Subtract 3/81 from 50/42

1st number: 1 8/42, 2nd number: 3/81

50/42 - 3/81 is 218/189.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 81 is 1134
  2. For the 1st fraction, since 42 × 27 = 1134,
    50/42 = 50 × 27/42 × 27 = 1350/1134
  3. Likewise, for the 2nd fraction, since 81 × 14 = 1134,
    3/81 = 3 × 14/81 × 14 = 42/1134
  4. Subtract the two fractions:
    1350/1134 - 42/1134 = 1350 - 42/1134 = 1308/1134
  5. After reducing the fraction, the answer is 218/189
  6. In mixed form: 129/189

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