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Subtract 15/27 from 2/42

2/42 - 15/27 is -32/63.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 27 is 378
  2. For the 1st fraction, since 42 × 9 = 378,
    2/42 = 2 × 9/42 × 9 = 18/378
  3. Likewise, for the 2nd fraction, since 27 × 14 = 378,
    15/27 = 15 × 14/27 × 14 = 210/378
  4. Subtract the two fractions:
    18/378 - 210/378 = 18 - 210/378 = -192/378
  5. After reducing the fraction, the answer is -32/63

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