<|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 [61, -15, 31], create an equation that equals 363. You may use basic arithmetic operations (+, -, *, /) and each number can only be used once. Show your work in <think> </think> tags. Return your final equation in <answer> </answer> tags, similar to the example below: <answer> (2 + 3) * 4 = 16 </answer>.<|im_end|>
<|im_start|>assistant
Let me solve this step by step.
<think>