Find the sum of all values of $x$ such that $|x-1| = 7$.
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Find the sum of all values of $x$ such that $|x-1| = 7$.
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
2
Find the sum of all values of $x$ such that $|x-1| = 7$.
train