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Subtract 3/18 from 2/15

2/15 - 3/18 is -1/30.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 15 and 18 is 90

    Next, find the equivalent fraction of both fractional numbers with denominator 90
  2. For the 1st fraction, since 15 × 6 = 90,
    2/15 = 2 × 6/15 × 6 = 12/90
  3. Likewise, for the 2nd fraction, since 18 × 5 = 90,
    3/18 = 3 × 5/18 × 5 = 15/90
  4. Subtract the two like fractions:
    12/90 - 15/90 = 12 - 15/90 = -3/90
  5. After reducing the fraction, the answer is -1/30

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