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Add 2/42 and 30/81

2/42 + 30/81 is 79/189.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 81 is 1134
  2. For the 1st fraction, since 42 × 27 = 1134,
    2/42 = 2 × 27/42 × 27 = 54/1134
  3. Likewise, for the 2nd fraction, since 81 × 14 = 1134,
    30/81 = 30 × 14/81 × 14 = 420/1134
  4. Add the two fractions:
    54/1134 + 420/1134 = 54 + 420/1134 = 474/1134
  5. After reducing the fraction, the answer is 79/189

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