viết lại câu mà ko thay đổi nghĩa

1 it took mr. hoang half an hour to walk to work last monday

→ mr. hoang spent-----------------------------

2 what is the price of the cap?

→ how--------------------

3 it's a six-hour drive from london to edinburg

→ it takes-------------------------

4 what is mai's weight?

→ how------------------------

5 why isn't this tv working?

→ what-------------------------

6 minh didn't go to school last tuesday

→ minh was-----------------------------

7 how old is your daughter?

→ what------------------------

8 i like going to the cinemamore than reading books at home

→ i prefer---------------------------

9 why don't we go to see a cartoon for a change?

→ what about--------------------

10 what about going to the amusement center now

→ let's-----------------------------

Đặt \(\frac{x}{5}=\frac{y}{7}=\frac{z}{2}=k\Rightarrow\hept{\begin{cases}x=5k\\y=7k\\z=2k\end{cases}}\)

Ta có : 

\(y-x=48\Leftrightarrow7k-5k=48\)

                     \(\Leftrightarrow k.\left(7-5\right)=48\)

                     \(\Leftrightarrow k.2=48\)

                      \(\Rightarrow k=24\)

\(\Rightarrow\hept{\begin{cases}\frac{x}{5}=24\\\frac{y}{7}=24\\\frac{z}{2}=24\end{cases}\Rightarrow\hept{\begin{cases}x=24.5\\y=24.7\\z=24.2\end{cases}\Rightarrow}\hept{\begin{cases}x=120\\y=168\\z=48\end{cases}}}\)

Vậy \(\hept{\begin{cases}x=120\\y=168\\z=48\end{cases}}\)

Nhớ nha Trang trịnh

bạn giả được tớ tặng bạn 1    nicks game

đặt câu hỏi cho từ gạch chân

1 couldn't go to the beach because it rained hard all day

2 it takes her twenty minute to go to school

3 yes, she is a careful cyclist

4 the final champion league cup match took place in the old trafford stadium

5 they were at the library for 3 hour yesterday

6 we will have a party next saturday

thanks trước nha