Find all the real solutions to
\[\frac{x^2 + 4x}{x - 1} + \frac{72x - 72}{x^2 + 4x} - 18 = 0.\]Enter all the solutions, separated by commas.
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Find all the real solutions to
\[\frac{x^2 + 4x}{x - 1} + \frac{72x - 72}{x^2 + 4x} - 18 = 0.\]Enter all the solutions, separated by commas.
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
2,6
Find all the real solutions to
\[\frac{x^2 + 4x}{x - 1} + \frac{72x - 72}{x^2 + 4x} - 18 = 0.\]Enter all the solutions, separated by commas.
train