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Subtract 8/10 from 3/18

3/18 - 8/10 is -19/30.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 18 and 10 is 90
  2. For the 1st fraction, since 18 × 5 = 90,
    3/18 = 3 × 5/18 × 5 = 15/90
  3. Likewise, for the 2nd fraction, since 10 × 9 = 90,
    8/10 = 8 × 9/10 × 9 = 72/90
  4. Subtract the two fractions:
    15/90 - 72/90 = 15 - 72/90 = -57/90
  5. After reducing the fraction, the answer is -19/30

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