<|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 [23, -18, 39, -53], create an equation that equals 59. You can use basic arithmetic operations (+, -, *, /) and each number can only be used once. Show your work in <think> </think>. And return the final equation and answer in <answer> </answer>. For example, unless the target equals 0, the final equation should have an operation. For example, if the target is -27, you can write the equation: (55 + 73) * (14 - 39) = -27.<|im_end|>
<|im_start|>assistant
Let me solve this step by step.
<think>