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Add 28/32 and 12/81

28/32 + 12/81 is 221/216.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 32 and 81 is 2592

    Next, find the equivalent fraction of both fractional numbers with denominator 2592
  2. For the 1st fraction, since 32 × 81 = 2592,
    28/32 = 28 × 81/32 × 81 = 2268/2592
  3. Likewise, for the 2nd fraction, since 81 × 32 = 2592,
    12/81 = 12 × 32/81 × 32 = 384/2592
  4. Add the two like fractions:
    2268/2592 + 384/2592 = 2268 + 384/2592 = 2652/2592
  5. 2652/2592 simplified gives 221/216
  6. So, 28/32 + 12/81 = 221/216
    In mixed form: 15/216

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