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Subtract 18/42 from 1/6

1/6 - 18/42 is -11/42.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 6 and 42 is 42
  2. For the 1st fraction, since 6 × 7 = 42,
    1/6 = 1 × 7/6 × 7 = 7/42
  3. Likewise, for the 2nd fraction, since 42 × 1 = 42,
    18/42 = 18 × 1/42 × 1 = 18/42
  4. Subtract the two fractions:
    7/42 - 18/42 = 7 - 18/42 = -11/42

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