Answers

Add 81/63 and 27/12

1^st number: 1 18/63, 2^nd number: 2 3/12

81/63 + 27/12 is 99/28.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 63 and 12 is 252
   
   Next, find the equivalent fraction of both fractional numbers with denominator 252
2. For the 1st fraction, since 63 × 4 = 252,
   81/63 = 81 × 4/63 × 4 = 324/252
3. Likewise, for the 2nd fraction, since 12 × 21 = 252,
   27/12 = 27 × 21/12 × 21 = 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, 81/63 + 27/12 = 99/28
   In mixed form: 315/28

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