80
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Compute $(34-10)+(20-9)+(55-10)$ in your head.
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
80
Compute $(34-10)+(20-9)+(55-10)$ in your head.
train