Answers

Add 81/63 and 84/36

1^st number: 1 18/63, 2^nd number: 2 12/36

81/63 + 84/36 is 76/21.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 63 and 36 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 36 × 7 = 252,
   84/36 = 84 × 7/36 × 7 = 588/252
4. Add the two like fractions:
   324/252 + 588/252 = 324 + 588/252 = 912/252
5. 912/252 simplified gives 76/21
6. So, 81/63 + 84/36 = 76/21
   In mixed form: 313/21

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