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Subtract 18/24 from 25/45

25/45 - 18/24 is -7/36.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 45 and 24 is 360

    Next, find the equivalent fraction of both fractional numbers with denominator 360
  2. For the 1st fraction, since 45 × 8 = 360,
    25/45 = 25 × 8/45 × 8 = 200/360
  3. Likewise, for the 2nd fraction, since 24 × 15 = 360,
    18/24 = 18 × 15/24 × 15 = 270/360
  4. Subtract the two like fractions:
    200/360 - 270/360 = 200 - 270/360 = -70/360
  5. After reducing the fraction, the answer is -7/36

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