<|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
Given the numbers [47, 88, 120, 31], your goal is to create an equation that equals 86. You can only use basic arithmetic operations (+, -, *, /) and each number can only be used once. Below you will work through various equations with explanations and can adjust your approach while sharing your reasoning and equations in <think> </think> tags. Match your final equation and result with the provided example format: <answer> your equation = result </answer> .<|im_end|>
<|im_start|>assistant
Let me solve this step by step.
<think>