-[beginarraylll3&5&-0.69&frac{910}&-9endarray]/ 2.4

Câu Hỏi Thường Gặp

• Dung dịch $-\left[\begin{array}{lll}3& 5& -0.6\\ 9& \frac{9}{10}& -9\end{array}\right]÷2.4$

  

  $$\left[\begin{array}{lll}-\frac{5}{4}& -\frac{25}{12}& \frac{1}{4}\\ -\frac{15}{4}& -\frac{3}{8}& \frac{15}{4}\end{array}\right]$$