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Subtract 24/84 from 15/75

15/75 - 24/84 is -3/35.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 75 and 84 is 2100
  2. For the 1st fraction, since 75 × 28 = 2100,
    15/75 = 15 × 28/75 × 28 = 420/2100
  3. Likewise, for the 2nd fraction, since 84 × 25 = 2100,
    24/84 = 24 × 25/84 × 25 = 600/2100
  4. Subtract the two fractions:
    420/2100 - 600/2100 = 420 - 600/2100 = -180/2100
  5. After reducing the fraction, the answer is -3/35

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