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Subtract 40/14 from 10/42

1st number: 10/42, 2nd number: 2 12/14

10/42 - 40/14 is -55/21.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 14 is 42
  2. For the 1st fraction, since 42 × 1 = 42,
    10/42 = 10 × 1/42 × 1 = 10/42
  3. Likewise, for the 2nd fraction, since 14 × 3 = 42,
    40/14 = 40 × 3/14 × 3 = 120/42
  4. Subtract the two fractions:
    10/42 - 120/42 = 10 - 120/42 = -110/42
  5. After reducing the fraction, the answer is -55/21

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