Answers

Add 28/81 and 15/36

28/81 + 15/36 is 247/324.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 81 and 36 is 324
   
   Next, find the equivalent fraction of both fractional numbers with denominator 324
2. For the 1st fraction, since 81 × 4 = 324,
   28/81 = 28 × 4/81 × 4 = 112/324
3. Likewise, for the 2nd fraction, since 36 × 9 = 324,
   15/36 = 15 × 9/36 × 9 = 135/324
4. Add the two like fractions:
   112/324 + 135/324 = 112 + 135/324 = 247/324
5. So, 28/81 + 15/36 = 247/324

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