<|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 [2, 20, 7, 15], create an equation that equals 47. You can use basic arithmetic operations (+, -, *, /) and each number can only be used once. Show your work in <think> </think> tags and provide your final equation and answer in <answer> </answer> tags in the same format. Remember, just an equation without a complete sentence to explain your steps will not be accepted.<|im_end|>
<|im_start|>assistant
Let me solve this step by step.
<think>