Answers

Add 8/63 and 8/20

8/63 + 8/20 is 166/315.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 63 and 20 is 1260
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1260
2. For the 1st fraction, since 63 × 20 = 1260,
   8/63 = 8 × 20/63 × 20 = 160/1260
3. Likewise, for the 2nd fraction, since 20 × 63 = 1260,
   8/20 = 8 × 63/20 × 63 = 504/1260
4. Add the two like fractions:
   160/1260 + 504/1260 = 160 + 504/1260 = 664/1260
5. 664/1260 simplified gives 166/315
6. So, 8/63 + 8/20 = 166/315

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