Answers

Add 90/5 and 84/81

1^st number: 18 0/5, 2^nd number: 1 3/81

90/5 + 84/81 is 514/27.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 5 and 81 is 405
   
   Next, find the equivalent fraction of both fractional numbers with denominator 405
2. For the 1st fraction, since 5 × 81 = 405,
   90/5 = 90 × 81/5 × 81 = 7290/405
3. Likewise, for the 2nd fraction, since 81 × 5 = 405,
   84/81 = 84 × 5/81 × 5 = 420/405
4. Add the two like fractions:
   7290/405 + 420/405 = 7290 + 420/405 = 7710/405
5. 7710/405 simplified gives 514/27
6. So, 90/5 + 84/81 = 514/27
   In mixed form: 191/27

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