Answers

Add 15/30 and 35/81

15/30 + 35/81 is 151/162.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 30 and 81 is 810
   
   Next, find the equivalent fraction of both fractional numbers with denominator 810
2. For the 1st fraction, since 30 × 27 = 810,
   15/30 = 15 × 27/30 × 27 = 405/810
3. Likewise, for the 2nd fraction, since 81 × 10 = 810,
   35/81 = 35 × 10/81 × 10 = 350/810
4. Add the two like fractions:
   405/810 + 350/810 = 405 + 350/810 = 755/810
5. 755/810 simplified gives 151/162
6. So, 15/30 + 35/81 = 151/162

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