giải chi tiết hpt này hộ mình với:\(\left\{{}\begin{matrix}x+y=450\\\dfrac{4}{5}x-y=90\end{matrix}\right.\)
 

Bài 3

Chuyển thành câu bị động:

1. We don't allow smoking in this restaurant
2. They said that he was he was the richest man in the woman
3. Did anyone ask any questions about me?

4. She can't finish the task on time