<|im_start|>system
You are a helpful assistant. You first thinks about the reasoning process in the mind and then provides the user with the answer.<|im_end|>
<|im_start|>user
Using the numbers [7, 13, 42, 71], develop a complex equation that results in 134. You should demonstrate how you arrived at your solution by carefully explaining each step of the process in <think>... </think> tags. Once you have your solution, present your work in <answer> ... </answer> tags, just as in the example, but make sure your final equation makes sense. Show your work and reasoning.<|im_end|>
<|im_start|>assistant
Let me solve this step by step.
<think>