64
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
When three numbers are added two at a time the sums are 29, 46, and 53. What is the sum of all three numbers?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
64
When three numbers are added two at a time the sums are 29, 46, and 53. What is the sum of all three numbers?
train