Ok so first, what I did was simplify the denominators of the fractions. 3^2-1 is 8, 5^2-1 is 24, and 7^2-1 is 48. (Because 3 squared is 9, 5 squared is 25, and 7 squared is 49.)

So the fractions are 6/8, 6/24, and 6/48. Then I simplified them. To make it easier, I simplified them into eighths.

6/24 = 2/8 (We could've put 1/4, but I'm gonna use eighths for this problem. You can use whatever you want though.)

6/48 = 1/8

After that we add 6/8 + 2/8 + 1/8 to get 9/8.

**So the answer is 9/8, or 1 1/8.**