Answers

Add 4/63 and 5/20

4/63 + 5/20 is 79/252.

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,
   4/63 = 4 × 20/63 × 20 = 80/1260
3. Likewise, for the 2nd fraction, since 20 × 63 = 1260,
   5/20 = 5 × 63/20 × 63 = 315/1260
4. Add the two like fractions:
   80/1260 + 315/1260 = 80 + 315/1260 = 395/1260
5. 395/1260 simplified gives 79/252
6. So, 4/63 + 5/20 = 79/252

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