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	Các bình luận về: Đề: Trong không gian với hệ trục tọa độ Oxyz, cho tam giác ABC có \(A\left( {1;1;3} \right);B\left( {2;6;5} \right)\) và tọa độ trọng tâm \(G\left( { &#8211; 1;2;5} \right)\). Tìm tọa độ điểm C.	</title>
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