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Subtract 15/25 from 1/18

1/18 - 15/25 is -49/90.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 18 and 25 is 450

    Next, find the equivalent fraction of both fractional numbers with denominator 450
  2. For the 1st fraction, since 18 × 25 = 450,
    1/18 = 1 × 25/18 × 25 = 25/450
  3. Likewise, for the 2nd fraction, since 25 × 18 = 450,
    15/25 = 15 × 18/25 × 18 = 270/450
  4. Subtract the two like fractions:
    25/450 - 270/450 = 25 - 270/450 = -245/450
  5. After reducing the fraction, the answer is -49/90

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