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Subtract 20/42 from 2/6

2/6 - 20/42 is -1/7.

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,
    2/6 = 2 × 7/6 × 7 = 14/42
  3. Likewise, for the 2nd fraction, since 42 × 1 = 42,
    20/42 = 20 × 1/42 × 1 = 20/42
  4. Subtract the two fractions:
    14/42 - 20/42 = 14 - 20/42 = -6/42
  5. After reducing the fraction, the answer is -1/7

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