Answers

Add 36/8 and 20/81

1^st number: 4 4/8, 2^nd number: 20/81

36/8 + 20/81 is 769/162.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 8 and 81 is 648
   
   Next, find the equivalent fraction of both fractional numbers with denominator 648
2. For the 1st fraction, since 8 × 81 = 648,
   36/8 = 36 × 81/8 × 81 = 2916/648
3. Likewise, for the 2nd fraction, since 81 × 8 = 648,
   20/81 = 20 × 8/81 × 8 = 160/648
4. Add the two like fractions:
   2916/648 + 160/648 = 2916 + 160/648 = 3076/648
5. 3076/648 simplified gives 769/162
6. So, 36/8 + 20/81 = 769/162
   In mixed form: 4121/162

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