The conversation between human and AI assistant.
[|Human|] Find the missing value for n.
[|AI|] The missing value for n is 5. 

You can find this value by subtracting 3 from both sides of the equation to isolate n: 

n + 3 - 3 = 8 - 3
n = 5
[|Human|] 
Find the missing value for n.