Answers

Add 15/80 and 7/63

15/80 + 7/63 is 43/144.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 80 and 63 is 5040
2. For the 1st fraction, since 80 × 63 = 5040,
   15/80 = 15 × 63/80 × 63 = 945/5040
3. Likewise, for the 2nd fraction, since 63 × 80 = 5040,
   7/63 = 7 × 80/63 × 80 = 560/5040
4. Add the two fractions:
   945/5040 + 560/5040 = 945 + 560/5040 = 1505/5040
5. After reducing the fraction, the answer is 43/144

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