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Add 81/12 and 21/10

1st number: 6 9/12, 2nd number: 2 1/10

81/12 + 21/10 is 177/20.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 12 and 10 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 10 × 6 = 60,
    21/10 = 21 × 6/10 × 6 = 126/60
  4. Add the two like fractions:
    405/60 + 126/60 = 405 + 126/60 = 531/60
  5. 531/60 simplified gives 177/20
  6. So, 81/12 + 21/10 = 177/20
    In mixed form: 817/20

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