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Subtract 1/42 from 27/12

1st number: 2 3/12, 2nd number: 1/42

27/12 - 1/42 is 187/84.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 12 and 42 is 84

    Next, find the equivalent fraction of both fractional numbers with denominator 84
  2. For the 1st fraction, since 12 × 7 = 84,
    27/12 = 27 × 7/12 × 7 = 189/84
  3. Likewise, for the 2nd fraction, since 42 × 2 = 84,
    1/42 = 1 × 2/42 × 2 = 2/84
  4. Subtract the two like fractions:
    189/84 - 2/84 = 189 - 2/84 = 187/84
  5. In mixed form: 219/84

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