Answers

Add 63/9 and 20/84

1^st number: 7 0/9, 2^nd number: 20/84

63/9 + 20/84 is 152/21.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 9 and 84 is 252
   
   Next, find the equivalent fraction of both fractional numbers with denominator 252
2. For the 1st fraction, since 9 × 28 = 252,
   63/9 = 63 × 28/9 × 28 = 1764/252
3. Likewise, for the 2nd fraction, since 84 × 3 = 252,
   20/84 = 20 × 3/84 × 3 = 60/252
4. Add the two like fractions:
   1764/252 + 60/252 = 1764 + 60/252 = 1824/252
5. 1824/252 simplified gives 152/21
6. So, 63/9 + 20/84 = 152/21
   In mixed form: 75/21

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