Answers

Add 84/81 and 4/5

1^st number: 1 3/81, 2^nd number: 4/5

84/81 + 4/5 is 248/135.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 81 and 5 is 405
   
   Next, find the equivalent fraction of both fractional numbers with denominator 405
2. For the 1st fraction, since 81 × 5 = 405,
   84/81 = 84 × 5/81 × 5 = 420/405
3. Likewise, for the 2nd fraction, since 5 × 81 = 405,
   4/5 = 4 × 81/5 × 81 = 324/405
4. Add the two like fractions:
   420/405 + 324/405 = 420 + 324/405 = 744/405
5. 744/405 simplified gives 248/135
6. So, 84/81 + 4/5 = 248/135
   In mixed form: 1113/135

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