Answers

Add 9/63 and 10/80

9/63 + 10/80 is 15/56.

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,
   9/63 = 9 × 80/63 × 80 = 720/5040
3. Likewise, for the 2nd fraction, since 80 × 63 = 5040,
   10/80 = 10 × 63/80 × 63 = 630/5040
4. Add the two like fractions:
   720/5040 + 630/5040 = 720 + 630/5040 = 1350/5040
5. 1350/5040 simplified gives 15/56
6. So, 9/63 + 10/80 = 15/56

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