is

\(-3x+2x-7x=-24\)
\(\xrightarrow[]{}\left(-3+2-7\right)x=-24\)
\(\xrightarrow[]{}-8x=-24\)
\(\xrightarrow[]{}x=3\)

Part C:
1. don't ride
2. don't sell
3. doesn't bring
4. doesn't take
5. doesn't cost
6. don't seem
7. don't buy
8. doesn't dance
9. doesn't run
10. don't work

Part D:
1. Do you wake up
2. Do you go
3. Does she drink
4. Does he smoke
5. Does it hurt
6. Do you dance
7. Do they travel
8. Does Emma cook
9. Does Alexander exercise
10. Do I look

1. There is a desk, an armchair, two computers, and a printer in my father's working room.
2. Because Jane is intelligent, kind-hearted, and helpful, many people in my class love her.
3. Nam is sitting to the right of Huong in the classroom at the moment.
4. On the table, there is his computer.
5. I am going to visit my grandparents next weekend.

Staying healthy is very important to all of us. If you want to balance your physical health, follow these tips. First of all, have a properly balanced diet. Second, exercise regularly: including morning and evening walks. Third, practice meditation, and reduce greasy foods. Finally, increase the consumption of vegetables and fruits.

VIII:
1. kitchen
2. new dishes
3. pictures
4. ceiling lights
5. go

IX:
1. can
2. love
3. can use mine

Part A:
1. go
2. visit
3. play
4. works
5. tells
6. helps
7. swim
8. dance
9. takes care 
10. leaves

Part B:
1. is
2. is
3. drives
4. open
5. is
6. have
7. boils
8. freezes
9. speaks
10. has

\(b,\) \(3\dfrac{2}{5}\times1\dfrac{4}{7}+\dfrac{12}{35}\)

\(=\dfrac{17}{5}\times\dfrac{11}{7}+\dfrac{12}{35}\)
 

\(=\dfrac{187}{35}+\dfrac{12}{35}\)
 

\(=\dfrac{199}{35}\)

1. What foreign language does he have at school?
2. I write new words in the notebook and read them aloud.
3. Khum có hiểu :3 

a) 50
b) 40
No