Answers

Add 63/42 and 45/4

1^st number: 1 21/42, 2^nd number: 11 1/4

63/42 + 45/4 is 51/4.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 42 and 4 is 84
   
   Next, find the equivalent fraction of both fractional numbers with denominator 84
2. For the 1st fraction, since 42 × 2 = 84,
   63/42 = 63 × 2/42 × 2 = 126/84
3. Likewise, for the 2nd fraction, since 4 × 21 = 84,
   45/4 = 45 × 21/4 × 21 = 945/84
4. Add the two like fractions:
   126/84 + 945/84 = 126 + 945/84 = 1071/84
5. 1071/84 simplified gives 51/4
6. So, 63/42 + 45/4 = 51/4
   In mixed form: 123/4

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