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Add 81/12 and 1/5

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

81/12 + 1/5 is 139/20.

Steps for adding 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,
    1/5 = 1 × 12/5 × 12 = 12/60
  4. Add the two like fractions:
    405/60 + 12/60 = 405 + 12/60 = 417/60
  5. 417/60 simplified gives 139/20
  6. So, 81/12 + 1/5 = 139/20
    In mixed form: 619/20

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