Answers

Add 84/8 and 63/42

1^st number: 10 4/8, 2^nd number: 1 21/42

84/8 + 63/42 is 12/1.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 8 and 42 is 168
   
   Next, find the equivalent fraction of both fractional numbers with denominator 168
2. For the 1st fraction, since 8 × 21 = 168,
   84/8 = 84 × 21/8 × 21 = 1764/168
3. Likewise, for the 2nd fraction, since 42 × 4 = 168,
   63/42 = 63 × 4/42 × 4 = 252/168
4. Add the two like fractions:
   1764/168 + 252/168 = 1764 + 252/168 = 2016/168
5. 2016/168 simplified gives 12/1
6. So, 84/8 + 63/42 = 12/1

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