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Subtract 56/27 from 18/42

1st number: 18/42, 2nd number: 2 2/27

18/42 - 56/27 is -311/189.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 27 is 378

    Next, find the equivalent fraction of both fractional numbers with denominator 378
  2. For the 1st fraction, since 42 × 9 = 378,
    18/42 = 18 × 9/42 × 9 = 162/378
  3. Likewise, for the 2nd fraction, since 27 × 14 = 378,
    56/27 = 56 × 14/27 × 14 = 784/378
  4. Subtract the two like fractions:
    162/378 - 784/378 = 162 - 784/378 = -622/378
  5. After reducing the fraction, the answer is -311/189

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