Answers

Add 9/63 and 9/12

9/63 + 9/12 is 25/28.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 63 and 12 is 252
   
   Next, find the equivalent fraction of both fractional numbers with denominator 252
2. For the 1st fraction, since 63 × 4 = 252,
   9/63 = 9 × 4/63 × 4 = 36/252
3. Likewise, for the 2nd fraction, since 12 × 21 = 252,
   9/12 = 9 × 21/12 × 21 = 189/252
4. Add the two like fractions:
   36/252 + 189/252 = 36 + 189/252 = 225/252
5. 225/252 simplified gives 25/28
6. So, 9/63 + 9/12 = 25/28

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