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Subtract 15/25 from 7/18

7/18 - 15/25 is -19/90.

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,
    7/18 = 7 × 25/18 × 25 = 175/450
  3. Likewise, for the 2nd fraction, since 25 × 18 = 450,
    15/25 = 15 × 18/25 × 18 = 270/450
  4. Subtract the two like fractions:
    175/450 - 270/450 = 175 - 270/450 = -95/450
  5. After reducing the fraction, the answer is -19/90

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