Answers

Add 18/9 and 42/81

1^st number: 2 0/9, 2^nd number: 42/81

18/9 + 42/81 is 68/27.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 9 and 81 is 81
   
   Next, find the equivalent fraction of both fractional numbers with denominator 81
2. For the 1st fraction, since 9 × 9 = 81,
   18/9 = 18 × 9/9 × 9 = 162/81
3. Likewise, for the 2nd fraction, since 81 × 1 = 81,
   42/81 = 42 × 1/81 × 1 = 42/81
4. Add the two like fractions:
   162/81 + 42/81 = 162 + 42/81 = 204/81
5. 204/81 simplified gives 68/27
6. So, 18/9 + 42/81 = 68/27
   In mixed form: 214/27

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