Answers

Add 4/36 and 7/81

4/36 + 7/81 is 16/81.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 36 and 81 is 324
   
   Next, find the equivalent fraction of both fractional numbers with denominator 324
2. For the 1st fraction, since 36 × 9 = 324,
   4/36 = 4 × 9/36 × 9 = 36/324
3. Likewise, for the 2nd fraction, since 81 × 4 = 324,
   7/81 = 7 × 4/81 × 4 = 28/324
4. Add the two like fractions:
   36/324 + 28/324 = 36 + 28/324 = 64/324
5. 64/324 simplified gives 16/81
6. So, 4/36 + 7/81 = 16/81

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