Answers

Add 15/28 and 9/80

15/28 + 9/80 is 363/560.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 28 and 80 is 560
2. For the 1st fraction, since 28 × 20 = 560,
   15/28 = 15 × 20/28 × 20 = 300/560
3. Likewise, for the 2nd fraction, since 80 × 7 = 560,
   9/80 = 9 × 7/80 × 7 = 63/560
4. Add the two fractions:
   300/560 + 63/560 = 300 + 63/560 = 363/560
5. So, 15/28 + 9/80 = 363/560

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