Answers

Add 63/4 and 42/45

1^st number: 15 3/4, 2^nd number: 42/45

63/4 + 42/45 is 1001/60.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 4 and 45 is 180
   
   Next, find the equivalent fraction of both fractional numbers with denominator 180
2. For the 1st fraction, since 4 × 45 = 180,
   63/4 = 63 × 45/4 × 45 = 2835/180
3. Likewise, for the 2nd fraction, since 45 × 4 = 180,
   42/45 = 42 × 4/45 × 4 = 168/180
4. Add the two like fractions:
   2835/180 + 168/180 = 2835 + 168/180 = 3003/180
5. 3003/180 simplified gives 1001/60
6. So, 63/4 + 42/45 = 1001/60
   In mixed form: 1641/60

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