Answers

Add 72/63 and 36/84

1^st number: 1 9/63, 2^nd number: 36/84

72/63 + 36/84 is 11/7.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 63 and 84 is 252
   
   Next, find the equivalent fraction of both fractional numbers with denominator 252
2. For the 1st fraction, since 63 × 4 = 252,
   72/63 = 72 × 4/63 × 4 = 288/252
3. Likewise, for the 2nd fraction, since 84 × 3 = 252,
   36/84 = 36 × 3/84 × 3 = 108/252
4. Add the two like fractions:
   288/252 + 108/252 = 288 + 108/252 = 396/252
5. 396/252 simplified gives 11/7
6. So, 72/63 + 36/84 = 11/7
   In mixed form: 14/7

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