Answer:

(x+8)/8 = 5 (make sure you use the parentheses)
Explanation:
The unknown number is 'x'.

(x+8)/8 = 5 (parentheses matter if you write it this way!)
(Add 8, then divide by 8, and the answer is 5.)
If you solve for x, the answer is 32.
You can double check that this works:
(32+8)/8 = 5
(40)/8 = 5
5=5