Answers

Add 12/42 and 27/81

12/42 + 27/81 is 13/21.

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,
   12/42 = 12 × 27/42 × 27 = 324/1134
3. Likewise, for the 2nd fraction, since 81 × 14 = 1134,
   27/81 = 27 × 14/81 × 14 = 378/1134
4. Add the two like fractions:
   324/1134 + 378/1134 = 324 + 378/1134 = 702/1134
5. 702/1134 simplified gives 13/21
6. So, 12/42 + 27/81 = 13/21

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