Answers

Add 15/81 and 4/9

15/81 + 4/9 is 17/27.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 81 and 9 is 81
   
   Next, find the equivalent fraction of both fractional numbers with denominator 81
2. For the 1st fraction, since 81 × 1 = 81,
   15/81 = 15 × 1/81 × 1 = 15/81
3. Likewise, for the 2nd fraction, since 9 × 9 = 81,
   4/9 = 4 × 9/9 × 9 = 36/81
4. Add the two like fractions:
   15/81 + 36/81 = 15 + 36/81 = 51/81
5. 51/81 simplified gives 17/27
6. So, 15/81 + 4/9 = 17/27

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