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Subtract 3/5 from 81/12

1st number: 6 9/12, 2nd number: 3/5

81/12 - 3/5 is 123/20.

Steps for subtracting fractions

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

    Next, find the equivalent fraction of both fractional numbers with denominator 60
  2. For the 1st fraction, since 12 × 5 = 60,
    81/12 = 81 × 5/12 × 5 = 405/60
  3. Likewise, for the 2nd fraction, since 5 × 12 = 60,
    3/5 = 3 × 12/5 × 12 = 36/60
  4. Subtract the two like fractions:
    405/60 - 36/60 = 405 - 36/60 = 369/60
  5. After reducing the fraction, the answer is 123/20
  6. In mixed form: 63/20

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