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Subtract 18/45 from 27/75

27/75 - 18/45 is -1/25.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 75 and 45 is 225
  2. For the 1st fraction, since 75 × 3 = 225,
    27/75 = 27 × 3/75 × 3 = 81/225
  3. Likewise, for the 2nd fraction, since 45 × 5 = 225,
    18/45 = 18 × 5/45 × 5 = 90/225
  4. Subtract the two fractions:
    81/225 - 90/225 = 81 - 90/225 = -9/225
  5. After reducing the fraction, the answer is -1/25

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