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Add 42/81 and 12/28

42/81 + 12/28 is 179/189.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 81 and 28 is 2268

    Next, find the equivalent fraction of both fractional numbers with denominator 2268
  2. For the 1st fraction, since 81 × 28 = 2268,
    42/81 = 42 × 28/81 × 28 = 1176/2268
  3. Likewise, for the 2nd fraction, since 28 × 81 = 2268,
    12/28 = 12 × 81/28 × 81 = 972/2268
  4. Add the two like fractions:
    1176/2268 + 972/2268 = 1176 + 972/2268 = 2148/2268
  5. 2148/2268 simplified gives 179/189
  6. So, 42/81 + 12/28 = 179/189

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