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Subtract 8/5 from 3/18

1st number: 3/18, 2nd number: 1 3/5

3/18 - 8/5 is -43/30.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 18 and 5 is 90

    Next, find the equivalent fraction of both fractional numbers with denominator 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 5 × 18 = 90,
    8/5 = 8 × 18/5 × 18 = 144/90
  4. Subtract the two like fractions:
    15/90 - 144/90 = 15 - 144/90 = -129/90
  5. After reducing the fraction, the answer is -43/30

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