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Subtract 80/21 from 50/27

1st number: 1 23/27, 2nd number: 3 17/21

50/27 - 80/21 is -370/189.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 27 and 21 is 189
  2. For the 1st fraction, since 27 × 7 = 189,
    50/27 = 50 × 7/27 × 7 = 350/189
  3. Likewise, for the 2nd fraction, since 21 × 9 = 189,
    80/21 = 80 × 9/21 × 9 = 720/189
  4. Subtract the two fractions:
    350/189 - 720/189 = 350 - 720/189 = -370/189

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