Answers

Add 5/8 and 84/81

1^st number: 5/8, 2^nd number: 1 3/81

5/8 + 84/81 is 359/216.

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,
   5/8 = 5 × 81/8 × 81 = 405/648
3. Likewise, for the 2nd fraction, since 81 × 8 = 648,
   84/81 = 84 × 8/81 × 8 = 672/648
4. Add the two like fractions:
   405/648 + 672/648 = 405 + 672/648 = 1077/648
5. 1077/648 simplified gives 359/216
6. So, 5/8 + 84/81 = 359/216
   In mixed form: 1143/216

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