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Subtract 27/3 from 12/90

1st number: 12/90, 2nd number: 9 0/3

12/90 - 27/3 is -133/15.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 90 and 3 is 90

    Next, find the equivalent fraction of both fractional numbers with denominator 90
  2. For the 1st fraction, since 90 × 1 = 90,
    12/90 = 12 × 1/90 × 1 = 12/90
  3. Likewise, for the 2nd fraction, since 3 × 30 = 90,
    27/3 = 27 × 30/3 × 30 = 810/90
  4. Subtract the two like fractions:
    12/90 - 810/90 = 12 - 810/90 = -798/90
  5. After reducing the fraction, the answer is -133/15

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