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	Các bình luận về: Có bao nhiêu cặp số nguyên \(\left( {x\,;y} \right)\) thỏa mãn \(2 \le x \le 2021\) và \({2^y} &#8211; {\log _2}\left( {x + {2^{y &#8211; 1}}} \right) = 2x &#8211; y\)?	</title>
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