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	Các bình luận về: Cho \(x,y,z\) là ba số thực khác \(0\)thỏa mãn \({2^x} = {5^y} = {10^{ &#8211; z}}.\)Tính \(P = \frac{1}{x} + \frac{1}{y} + \frac{1}{z}.\)	</title>
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