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	Các bình luận về:  (Sở Bắc Giang 2022) Trong không gian \(Oxyz\), biết rằng không có đường thẳng nào cắt đồng thời cả 4 đường thẳng \({d_1}:\frac{{x &#8211; 3}}{{ &#8211; 1}} = \frac{{y + 3}}{1} = \frac{z}{1};{d_2}:\frac{{x &#8211; 1}}{1} = \frac{{y &#8211; 1}}{2} = \frac{z}{{ &#8211; 1}};{d_3}:\frac{x}{1} = \frac{{y + 2}}{{ &#8211; 1}} = \frac{{z + 1}}{{ &#8211; 1}};{d_4}:\left\{ {\begin{array}{*{20}{l}}{x = 6 + t}\\{y = a + 3t.{\rm{ }}}\\{z = b + t}\end{array}} \right.\)



Giá trị \(2b &#8211; a\) bằng	</title>
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