Answers

Add 10/63 and 20/80

10/63 + 20/80 is 103/252.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 63 and 80 is 5040
   
   Next, find the equivalent fraction of both fractional numbers with denominator 5040
2. For the 1st fraction, since 63 × 80 = 5040,
   10/63 = 10 × 80/63 × 80 = 800/5040
3. Likewise, for the 2nd fraction, since 80 × 63 = 5040,
   20/80 = 20 × 63/80 × 63 = 1260/5040
4. Add the two like fractions:
   800/5040 + 1260/5040 = 800 + 1260/5040 = 2060/5040
5. 2060/5040 simplified gives 103/252
6. So, 10/63 + 20/80 = 103/252

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