<|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
The challenge is to craft an equation using the numbers [50, 10, 25, 20] that equals 80 by balancing each arithmetic operation. Show your thought process in <think> </think> tags and the resultant equation in <answer> </answer> tags, for example <answer> (50 + 20) - (25 - 10) = 80 </answer>.<|im_end|>
<|im_start|>assistant
Let me solve this step by step.
<think>