Answers

Add 18/30 and 84/81

1^st number: 18/30, 2^nd number: 1 3/81

18/30 + 84/81 is 221/135.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 30 and 81 is 810
   
   Next, find the equivalent fraction of both fractional numbers with denominator 810
2. For the 1st fraction, since 30 × 27 = 810,
   18/30 = 18 × 27/30 × 27 = 486/810
3. Likewise, for the 2nd fraction, since 81 × 10 = 810,
   84/81 = 84 × 10/81 × 10 = 840/810
4. Add the two like fractions:
   486/810 + 840/810 = 486 + 840/810 = 1326/810
5. 1326/810 simplified gives 221/135
6. So, 18/30 + 84/81 = 221/135
   In mixed form: 186/135

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