Answers

Add 7/84 and 81/63

1^st number: 7/84, 2^nd number: 1 18/63

7/84 + 81/63 is 115/84.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 84 and 63 is 252
   
   Next, find the equivalent fraction of both fractional numbers with denominator 252
2. For the 1st fraction, since 84 × 3 = 252,
   7/84 = 7 × 3/84 × 3 = 21/252
3. Likewise, for the 2nd fraction, since 63 × 4 = 252,
   81/63 = 81 × 4/63 × 4 = 324/252
4. Add the two like fractions:
   21/252 + 324/252 = 21 + 324/252 = 345/252
5. 345/252 simplified gives 115/84
6. So, 7/84 + 81/63 = 115/84
   In mixed form: 131/84

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