Answers

Add 63/84 and 81/18

1^st number: 63/84, 2^nd number: 4 9/18

63/84 + 81/18 is 21/4.

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,
   63/84 = 63 × 3/84 × 3 = 189/252
3. Likewise, for the 2nd fraction, since 18 × 14 = 252,
   81/18 = 81 × 14/18 × 14 = 1134/252
4. Add the two like fractions:
   189/252 + 1134/252 = 189 + 1134/252 = 1323/252
5. 1323/252 simplified gives 21/4
6. So, 63/84 + 81/18 = 21/4
   In mixed form: 51/4

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