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Subtract 18/12 from 1/5

1st number: 1/5, 2nd number: 1 6/12

1/5 - 18/12 is -13/10.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 5 and 12 is 60

    Next, find the equivalent fraction of both fractional numbers with denominator 60
  2. For the 1st fraction, since 5 × 12 = 60,
    1/5 = 1 × 12/5 × 12 = 12/60
  3. Likewise, for the 2nd fraction, since 12 × 5 = 60,
    18/12 = 18 × 5/12 × 5 = 90/60
  4. Subtract the two like fractions:
    12/60 - 90/60 = 12 - 90/60 = -78/60
  5. After reducing the fraction, the answer is -13/10

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