If $x$ is a positive number, by how much does $x+10$ exceed $10-x$? Express your answer in terms of $x$.
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
If $x$ is a positive number, by how much does $x+10$ exceed $10-x$? Express your answer in terms of $x$.
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
2x
If $x$ is a positive number, by how much does $x+10$ exceed $10-x$? Express your answer in terms of $x$.
train