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Subtract 4/42 from 1/12

1/12 - 4/42 is -1/84.

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,
    1/12 = 1 × 7/12 × 7 = 7/84
  3. Likewise, for the 2nd fraction, since 42 × 2 = 84,
    4/42 = 4 × 2/42 × 2 = 8/84
  4. Subtract the two like fractions:
    7/84 - 8/84 = 7 - 8/84 = -1/84

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