Answers

Add 84/21 and 45/81

1^st number: 4 0/21, 2^nd number: 45/81

84/21 + 45/81 is 41/9.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 81 is 567
   
   Next, find the equivalent fraction of both fractional numbers with denominator 567
2. For the 1st fraction, since 21 × 27 = 567,
   84/21 = 84 × 27/21 × 27 = 2268/567
3. Likewise, for the 2nd fraction, since 81 × 7 = 567,
   45/81 = 45 × 7/81 × 7 = 315/567
4. Add the two like fractions:
   2268/567 + 315/567 = 2268 + 315/567 = 2583/567
5. 2583/567 simplified gives 41/9
6. So, 84/21 + 45/81 = 41/9
   In mixed form: 45/9

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