Answers

Add 63/4 and 63/90

1^st number: 15 3/4, 2^nd number: 63/90

63/4 + 63/90 is 329/20.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 4 and 90 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 90 × 2 = 180,
   63/90 = 63 × 2/90 × 2 = 126/180
4. Add the two like fractions:
   2835/180 + 126/180 = 2835 + 126/180 = 2961/180
5. 2961/180 simplified gives 329/20
6. So, 63/4 + 63/90 = 329/20
   In mixed form: 169/20

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