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Subtract 9/18 from 25/84

25/84 - 9/18 is -17/84.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 84 and 18 is 252

    Next, find the equivalent fraction of both fractional numbers with denominator 252
  2. For the 1st fraction, since 84 × 3 = 252,
    25/84 = 25 × 3/84 × 3 = 75/252
  3. Likewise, for the 2nd fraction, since 18 × 14 = 252,
    9/18 = 9 × 14/18 × 14 = 126/252
  4. Subtract the two like fractions:
    75/252 - 126/252 = 75 - 126/252 = -51/252
  5. After reducing the fraction, the answer is -17/84

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