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Subtract 2/7 from 7/42

7/42 - 2/7 is -5/42.

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,
    7/42 = 7 × 1/42 × 1 = 7/42
  3. Likewise, for the 2nd fraction, since 7 × 6 = 42,
    2/7 = 2 × 6/7 × 6 = 12/42
  4. Subtract the two fractions:
    7/42 - 12/42 = 7 - 12/42 = -5/42

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