Answers

Add 81/84 and 27/18

1^st number: 81/84, 2^nd number: 1 9/18

81/84 + 27/18 is 69/28.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 84 and 18 is 252
   
   Next, find the equivalent fraction of both fractional numbers with denominator 252
2. For the 1st fraction, since 84 × 3 = 252,
   81/84 = 81 × 3/84 × 3 = 243/252
3. Likewise, for the 2nd fraction, since 18 × 14 = 252,
   27/18 = 27 × 14/18 × 14 = 378/252
4. Add the two like fractions:
   243/252 + 378/252 = 243 + 378/252 = 621/252
5. 621/252 simplified gives 69/28
6. So, 81/84 + 27/18 = 69/28
   In mixed form: 213/28

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