Answers

Add 4/81 and 7/36

4/81 + 7/36 is 79/324.

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,
   4/81 = 4 × 4/81 × 4 = 16/324
3. Likewise, for the 2nd fraction, since 36 × 9 = 324,
   7/36 = 7 × 9/36 × 9 = 63/324
4. Add the two like fractions:
   16/324 + 63/324 = 16 + 63/324 = 79/324
5. So, 4/81 + 7/36 = 79/324

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