Answers

Add 28/42 and 28/81

28/42 + 28/81 is 82/81.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 42 and 81 is 1134
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1134
2. For the 1st fraction, since 42 × 27 = 1134,
   28/42 = 28 × 27/42 × 27 = 756/1134
3. Likewise, for the 2nd fraction, since 81 × 14 = 1134,
   28/81 = 28 × 14/81 × 14 = 392/1134
4. Add the two like fractions:
   756/1134 + 392/1134 = 756 + 392/1134 = 1148/1134
5. 1148/1134 simplified gives 82/81
6. So, 28/42 + 28/81 = 82/81
   In mixed form: 11/81

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