Answers

Add 63/42 and 84/72

1^st number: 1 21/42, 2^nd number: 1 12/72

63/42 + 84/72 is 8/3.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 42 and 72 is 504
   
   Next, find the equivalent fraction of both fractional numbers with denominator 504
2. For the 1st fraction, since 42 × 12 = 504,
   63/42 = 63 × 12/42 × 12 = 756/504
3. Likewise, for the 2nd fraction, since 72 × 7 = 504,
   84/72 = 84 × 7/72 × 7 = 588/504
4. Add the two like fractions:
   756/504 + 588/504 = 756 + 588/504 = 1344/504
5. 1344/504 simplified gives 8/3
6. So, 63/42 + 84/72 = 8/3
   In mixed form: 22/3

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