Answers

Add 27/21 and 81/36

1^st number: 1 6/21, 2^nd number: 2 9/36

27/21 + 81/36 is 99/28.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 36 is 252
   
   Next, find the equivalent fraction of both fractional numbers with denominator 252
2. For the 1st fraction, since 21 × 12 = 252,
   27/21 = 27 × 12/21 × 12 = 324/252
3. Likewise, for the 2nd fraction, since 36 × 7 = 252,
   81/36 = 81 × 7/36 × 7 = 567/252
4. Add the two like fractions:
   324/252 + 567/252 = 324 + 567/252 = 891/252
5. 891/252 simplified gives 99/28
6. So, 27/21 + 81/36 = 99/28
   In mixed form: 315/28

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