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Subtract 6/7 from 4/42

4/42 - 6/7 is -16/21.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 7 is 42

    Next, find the equivalent fraction of both fractional numbers with denominator 42
  2. For the 1st fraction, since 42 × 1 = 42,
    4/42 = 4 × 1/42 × 1 = 4/42
  3. Likewise, for the 2nd fraction, since 7 × 6 = 42,
    6/7 = 6 × 6/7 × 6 = 36/42
  4. Subtract the two like fractions:
    4/42 - 36/42 = 4 - 36/42 = -32/42
  5. After reducing the fraction, the answer is -16/21

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