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Subtract 81/12 from 7/2

1st number: 3 1/2, 2nd number: 6 9/12

7/2 - 81/12 is -13/4.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 2 and 12 is 12

    Next, find the equivalent fraction of both fractional numbers with denominator 12
  2. For the 1st fraction, since 2 × 6 = 12,
    7/2 = 7 × 6/2 × 6 = 42/12
  3. Likewise, for the 2nd fraction, since 12 × 1 = 12,
    81/12 = 81 × 1/12 × 1 = 81/12
  4. Subtract the two like fractions:
    42/12 - 81/12 = 42 - 81/12 = -39/12
  5. After reducing the fraction, the answer is -13/4

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