Giải:

Chiều rộng kém chiều dài 15m

Vậy 15m là hiệu của chiều dài và chiều rộng

Ta có sơ đồ:

CD: |__|__|__|

CR: |__|__|....| } 15m

Hiệu số phần bằng nhau là:

3 - 2 = 1 (phần)

Chiều dài là:

15 : 1 x 3 = 45 (m)

Chiều rộng là:

45 - 15 = 30 (m)

Đáp số: CD: 45m

             CR: 30m

1/ You shouldn’t  wear this coat in winter. It’s not warm enough

\(\Rightarrow\) This coat is not warm enough for you to wear in winter

2/ Don’t stand on that chair. It’s not strong enough

\(\Rightarrow\) That chair is not strong enough to stand

3/ You can’t sleep in this bed. It’s not wide enough for you two

\(\Rightarrow\) This bed is not wide enough for you to sleep

4/  I couldn’t make coffee for everyone. There weren’t enough cups

\(\Rightarrow\) There weren't enough cups  to make coffee for everyone

5/  He didn’t finish the examination. He didn’t have enough time

\(\Rightarrow\) He didn't have enough time  to finish the examination

# Study well #

Câu D: Năng động là cơ sở để sáng tạo, sáng tạo là động lực để năng động.

HOK TỐT !!! 

Dùng There is vì a cake là S số ít, ta phải dùng There is. Nếu dùng There are sẽ là S số nhiều.

=> Ta ko quan tâm các S ở phía sau

1/ The child can't drink this milk. It's too hot

\(\rightarrow\) This milk is too hot for the child to drink

2/ We can't lift this weight. It's too heavy

\(\rightarrow\) This weight is too heavy for us to lift

3/ They can't push the piano through that door. It's too narow

\(\rightarrow\) That door is too narrow for them to push the piano through

4/ You can't hang the picture on that wall. It's too small

\(\rightarrow\) That wall is too small for you to hang the picture on

5/ She can't watch this programme. It's too boring

\(\rightarrow\) This programme is too boring for her to watch

# Hok tốt # 

Sao Nguyễn Lê Phước Thịnh lm khác bn ??? Ai sai

\(x-\dfrac{3}{10}=\dfrac{7}{15}\div\dfrac{3}{5}\)

\(\Rightarrow x-\dfrac{3}{10}=\dfrac{7}{15}\times\dfrac{5}{3}\)

\(\Rightarrow x-\dfrac{3}{10}=\dfrac{7\times5}{3\times5\times3}\)

\(\Rightarrow x-\dfrac{3}{10}=\dfrac{7}{9}\)

\(\Rightarrow x=\dfrac{7}{9}+\dfrac{3}{10}\)

\(\Rightarrow x=\dfrac{70}{90}+\dfrac{27}{90}\)

\(\Rightarrow x=\dfrac{97}{90}\)

Vậy \(x=\dfrac{97}{90}\)

\(\dfrac{3}{5}+x=\dfrac{5}{2}\)

\(\Rightarrow x=\dfrac{5}{2}-\dfrac{3}{5}\)

\(\Rightarrow x=\dfrac{25}{10}-\dfrac{6}{10}\)

\(\Rightarrow x=\dfrac{19}{10}\)

Vậy \(x=\dfrac{19}{10}\)

Có j mà nhức nách

250.000.000 năm về trước nhé !!!

Hok tốt !!!