Answers

Add 8/36 and 7/81

8/36 + 7/81 is 25/81.

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,
   8/36 = 8 × 9/36 × 9 = 72/324
3. Likewise, for the 2nd fraction, since 81 × 4 = 324,
   7/81 = 7 × 4/81 × 4 = 28/324
4. Add the two like fractions:
   72/324 + 28/324 = 72 + 28/324 = 100/324
5. 100/324 simplified gives 25/81
6. So, 8/36 + 7/81 = 25/81

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