bạn chưa học câu bị động và chủ động là như thế nào hử=)?

kh bt cách khác nên làm đỡ=)

\(49-7\left(13-x\right)=14\\ \Rightarrow7\left(13-x\right)=49-14\\ \Rightarrow7\left(13-x\right)=35\\ \Rightarrow13-x=\dfrac{35}{7}=5\\ \Rightarrow x=13-5\\ \Rightarrow x=8\)

A letter was sent to him by me.

The way was shown to us by the police officer.

A favor has been asked of him by us.

A lie was told to me by her.

A postcard has been written to her by them.

A cup of tea will be made for you by Kerrie.

The coffee has not been brought to us by the waiter.

peacefully

to a beautiful beach

from the airport

significantly

and reserved

in the morning sunlight