mình gửi b nhé
`2x-18=0`
`⇔2x=18`
`⇔x=18:2`
`⇔x=9`
Vậy `x=9`
My students are preparing the hall for their meeting
=>The teacher informed
Choose the best answer.
We are looking for ____ place to spend ____ night.
Please turn off ___ lights when you leave ___ room.
I like _____ colorful costumes of ____ ethnic minority people in Vietnam.