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Subtract 1/7 from 2/42

2/42 - 1/7 is -2/21.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 7 is 42
  2. For the 1st fraction, since 42 × 1 = 42,
    2/42 = 2 × 1/42 × 1 = 2/42
  3. Likewise, for the 2nd fraction, since 7 × 6 = 42,
    1/7 = 1 × 6/7 × 6 = 6/42
  4. Subtract the two fractions:
    2/42 - 6/42 = 2 - 6/42 = -4/42
  5. After reducing the fraction, the answer is -2/21

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