Answers

Add 6/9 and 18/81

6/9 + 18/81 is 8/9.

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,
   6/9 = 6 × 9/9 × 9 = 54/81
3. Likewise, for the 2nd fraction, since 81 × 1 = 81,
   18/81 = 18 × 1/81 × 1 = 18/81
4. Add the two like fractions:
   54/81 + 18/81 = 54 + 18/81 = 72/81
5. 72/81 simplified gives 8/9
6. So, 6/9 + 18/81 = 8/9

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