Answers

Add 42/27 and 18/81

1^st number: 1 15/27, 2^nd number: 18/81

42/27 + 18/81 is 16/9.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 27 and 81 is 81
   
   Next, find the equivalent fraction of both fractional numbers with denominator 81
2. For the 1st fraction, since 27 × 3 = 81,
   42/27 = 42 × 3/27 × 3 = 126/81
3. Likewise, for the 2nd fraction, since 81 × 1 = 81,
   18/81 = 18 × 1/81 × 1 = 18/81
4. Add the two like fractions:
   126/81 + 18/81 = 126 + 18/81 = 144/81
5. 144/81 simplified gives 16/9
6. So, 42/27 + 18/81 = 16/9
   In mixed form: 17/9

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