\(\frac{2}{3}x=\frac{3}{7}\left(1-x\right)\)

             \(\frac{2}{3}x=\frac{3}{7}-\frac{3}{7}x\)

\(\frac{2}{3}x+\frac{3}{7}x=\frac{3}{7}\)

           \(\frac{23}{21}x=\frac{3}{7}\)

                 \(x=\frac{3}{7}\div\frac{23}{21}\)

              \(x=\frac{9}{23}\)

1. leaves

2. are you crying

3. don't watch

4. doesn't speak

5. Doing

6. do they live

7. is playing

8. go

9. gives

10. travels

11. stays

12. has - drinks - reads - plays - practises - goes - gets up - gets - is wearing

II. 1. The film is longer than the videotape.

2. It's colder today than the temperature yesterday.

3. The oil-painting is more expensive than the water-color.

4. I ran farther than Dave.

5. Claire has more popular than Andrew.

6. My friends arrive earlier in fact than I expected.

7. Matthew is stronger than Daniel.

8. The buses doesn't run as frequently as the trains.

9. Joe got worse than Chris in the exam.

10. Mark's car is bigger than Sarah's car.

IV. 1. bigger

2. the smallest planet - far

3. tennis is more interesting

4. the best student - the most intelligent - more intelligent than

5. worse - the hottest month

6. not as warm as

7. the higgest mountain - higger - the higgest mountain

8. the most important - more important 

9. faster - faster - shorter than I

10. serious - better - worse

tổng = 5 hiệu có sơ đồ

tổng 5 phần 

hiệu 1 phần

3/5 tổng - hiệu =10 

lấy tổng đến 3 phần ( bạn cô gắng vẽ sơ đồ nhá vì mình k vẽ dk sơ đồ trên đây.hi)

coi tổng là số lớn , hieuj là sô nhỏ

hiệu số phần 3-1=2

hiệu là 10:2 x1=5

tổng = 5 lần hiệu = 5x5 =25

số bé là (25-5):2=10

số lớn là (25+5):2=15

1. She has such expensive jewellery that she locks it in a box.

2. Lan was very quiet so her mother knew she was doing something bad in the garden.

3. He is not enough money to buy many books.

4. Sam got bad marks so her teacher was angry.

1. and

2. much

3. D

4. D

5. The doctor advised me to eat less sugar.

6. Is he in second year at his university?

7. The nurse will help you take your temperature.

8. for

9. from 

10. morning 

11. A

12. Do you prefer to take part in sports?

13. We are going to a concert tonight at City Concert Center.

14. in

15. homeless 

16. boringly 

17. Please put the picture you in order to here.

18. I don't have any skirt like this.

19. biggest

20. along

21. Stay

22. show 

23. Mr.Pike's daughter is studying Art and music at university.

24. Lan is sitting between Hung and Hong on a couch in the living room.

Năm 2011, số dân của huyện này là:

        53275 +761 = 54036 [ người ]

Năm 2012 huyện đó có số dân là :

        54036 + 726 = 54762 [ người ]

         Đáp số : 54762 người

 đúng cái nhé

quang duong dai la

25 * 3 = 75 (km)

van toc o to la 

75 / 1,5 = 50 (km/gio)

dap so 50 km/gio

nhỏ cho **** 

thank you

Vì số tự nhiên nhỏ nhất chia hết cho cả 2,3,4,5 và 6 là 60 (ta dựa vào dấu hiệu chia hết) nên số tự nhiên nhỏ nhất chia cho 2,3,4,5 và 6 dư 1 là 60 + 1 = 61