1 will see

2 will be

3 will it

4 will book

5 will find

6 will be

7 Are you going to take up

8 is going to be

9 am going to make

10 am going to cut

= 1433

HT

1433 nhoa 

HT k chị đuy ><

TL

9999-8566=1433

HT

Tích Nếu Có Thể :j

Bài 3:

theo đề bài ta có:

\(\left\{{}\begin{matrix}2a-3b=0\\5b-7c=0\\3a-7b+5c=30\end{matrix}\right.\Leftrightarrow\left\{{}\begin{matrix}a=42\\b=28\\c=20\end{matrix}\right.\)

Bài 4: 

Đặt \(\dfrac{x}{4}=\dfrac{y}{5}=\dfrac{z}{6}=k\)

\(\Leftrightarrow\left\{{}\begin{matrix}x=4k\\y=5k\\z=6k\end{matrix}\right.\)

Ta có: \(x^2-2y^2+z^2=18\)

\(\Leftrightarrow16k^2-50k^2+36k^2=18\)

\(\Leftrightarrow k^2=9\)

Trường hợp 1: k=3

\(\Leftrightarrow\left\{{}\begin{matrix}x=4k=4\cdot3=12\\y=5k=5\cdot3=15\\z=6k=6\cdot3=18\end{matrix}\right.\)

Trường hợp 2: k=-3

\(\Leftrightarrow\left\{{}\begin{matrix}x=4k=-3\cdot4=-12\\y=5k=-3\cdot5=-15\\z=6k=-3\cdot6=-18\end{matrix}\right.\)

1875 nhoa 

HT ><

= 1875

chúc em học tốt

Cảm ơn ạ 

1, are having

2,does your train leave

3,Does-begin

4,am going

does-start

5, does-open

Opens, finishes

6, are-finishing

Am not going, am going

7, Are-doing

Am going, arrives

8,are-going

Are learning, leaves

9 does-finish

Last

10 am meeting

Chắc ngưa mồm quá chửi á cj Linh, kệ đi 😌

Em kệ nó, đạp luôn vào mồm nó ý.

còn nhiểu người để kb lắm em ạ, nên kb với những người lịch sự đó :D

8190 nhá

HT

TL

8190

TK cho mình

HT

Nhớ kb

910 x 9 = 8190

đó nhé

\(\left|x+\dfrac{1}{7}\right|-\dfrac{2}{3}=0\)

\(\Rightarrow\left|x+\dfrac{1}{7}\right|=0+\dfrac{2}{3}\\ \Rightarrow\left|x+\dfrac{1}{7}\right|=\dfrac{2}{3}\)

\(\Rightarrow\left[{}\begin{matrix}x+\dfrac{1}{7}=\dfrac{2}{3}\\x+\dfrac{1}{7}=-\dfrac{2}{3}\end{matrix}\right.\)

\(\Rightarrow\left[{}\begin{matrix}x=\dfrac{2}{3}-\dfrac{1}{7}\\x=-\dfrac{2}{3}-\dfrac{1}{7}\end{matrix}\right.\)

\(\Rightarrow\left[{}\begin{matrix}x=\dfrac{11}{21}\\x=-\dfrac{17}{21}\end{matrix}\right.\)