3
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
If $n$ is an integer, what is the remainder when the sum of $7 - n$ and $n + 3$ is divided by $7$?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
3
If $n$ is an integer, what is the remainder when the sum of $7 - n$ and $n + 3$ is divided by $7$?
train