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Subtract 42/15 from 1/6

1st number: 1/6, 2nd number: 2 12/15

1/6 - 42/15 is -79/30.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 6 and 15 is 30
  2. For the 1st fraction, since 6 × 5 = 30,
    1/6 = 1 × 5/6 × 5 = 5/30
  3. Likewise, for the 2nd fraction, since 15 × 2 = 30,
    42/15 = 42 × 2/15 × 2 = 84/30
  4. Subtract the two fractions:
    5/30 - 84/30 = 5 - 84/30 = -79/30

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