Question

The Windows on the first floor of a building are 3 1/2 yards wide. The Windows on the second floor of the building are 1 7/9 yards wide. How much wider are the Windows on the first floor than the second floor

Answer 1

the answer, is 2 1/9. subtract  1 7/7 from 3 1/2, and you'll get 2 1/2

(hope this helps)