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Subtract 18/28 from 18/56

18/56 - 18/28 is -9/28.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 56 and 28 is 56
  2. For the 1st fraction, since 56 × 1 = 56,
    18/56 = 18 × 1/56 × 1 = 18/56
  3. Likewise, for the 2nd fraction, since 28 × 2 = 56,
    18/28 = 18 × 2/28 × 2 = 36/56
  4. Subtract the two fractions:
    18/56 - 36/56 = 18 - 36/56 = -18/56
  5. After reducing the fraction, the answer is -9/28

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