Answers

Add 63/36 and 21/42

1^st number: 1 27/36, 2^nd number: 21/42

63/36 + 21/42 is 9/4.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 36 and 42 is 252
   
   Next, find the equivalent fraction of both fractional numbers with denominator 252
2. For the 1st fraction, since 36 × 7 = 252,
   63/36 = 63 × 7/36 × 7 = 441/252
3. Likewise, for the 2nd fraction, since 42 × 6 = 252,
   21/42 = 21 × 6/42 × 6 = 126/252
4. Add the two like fractions:
   441/252 + 126/252 = 441 + 126/252 = 567/252
5. 567/252 simplified gives 9/4
6. So, 63/36 + 21/42 = 9/4
   In mixed form: 21/4

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