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Subtract 18/12 from 3/90

1st number: 3/90, 2nd number: 1 6/12

3/90 - 18/12 is -22/15.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 90 and 12 is 180

    Next, find the equivalent fraction of both fractional numbers with denominator 180
  2. For the 1st fraction, since 90 × 2 = 180,
    3/90 = 3 × 2/90 × 2 = 6/180
  3. Likewise, for the 2nd fraction, since 12 × 15 = 180,
    18/12 = 18 × 15/12 × 15 = 270/180
  4. Subtract the two like fractions:
    6/180 - 270/180 = 6 - 270/180 = -264/180
  5. After reducing the fraction, the answer is -22/15

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