Answers

Add 63/21 and 45/18

1^st number: 3 0/21, 2^nd number: 2 9/18

63/21 + 45/18 is 11/2.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 18 is 126
   
   Next, find the equivalent fraction of both fractional numbers with denominator 126
2. For the 1st fraction, since 21 × 6 = 126,
   63/21 = 63 × 6/21 × 6 = 378/126
3. Likewise, for the 2nd fraction, since 18 × 7 = 126,
   45/18 = 45 × 7/18 × 7 = 315/126
4. Add the two like fractions:
   378/126 + 315/126 = 378 + 315/126 = 693/126
5. 693/126 simplified gives 11/2
6. So, 63/21 + 45/18 = 11/2
   In mixed form: 51/2

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