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Subtract 56/27 from 12/42

1st number: 12/42, 2nd number: 2 2/27

12/42 - 56/27 is -338/189.

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,
    12/42 = 12 × 9/42 × 9 = 108/378
  3. Likewise, for the 2nd fraction, since 27 × 14 = 378,
    56/27 = 56 × 14/27 × 14 = 784/378
  4. Subtract the two like fractions:
    108/378 - 784/378 = 108 - 784/378 = -676/378
  5. After reducing the fraction, the answer is -338/189

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