Answers

Add 15/18 and 35/81

15/18 + 35/81 is 205/162.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 18 and 81 is 162
   
   Next, find the equivalent fraction of both fractional numbers with denominator 162
2. For the 1st fraction, since 18 × 9 = 162,
   15/18 = 15 × 9/18 × 9 = 135/162
3. Likewise, for the 2nd fraction, since 81 × 2 = 162,
   35/81 = 35 × 2/81 × 2 = 70/162
4. Add the two like fractions:
   135/162 + 70/162 = 135 + 70/162 = 205/162
5. So, 15/18 + 35/81 = 205/162
   In mixed form: 143/162

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