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Subtract 6/27 from 3/42

3/42 - 6/27 is -19/126.

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,
    3/42 = 3 × 9/42 × 9 = 27/378
  3. Likewise, for the 2nd fraction, since 27 × 14 = 378,
    6/27 = 6 × 14/27 × 14 = 84/378
  4. Subtract the two like fractions:
    27/378 - 84/378 = 27 - 84/378 = -57/378
  5. After reducing the fraction, the answer is -19/126

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