Yesterday it is was very hot.

7 - x = 8 - (-7)

7 - x = 8 + 7

7 - x = 15

x = 7 - 15

x = -8

{ 5; 2 }

{ 5; 9 }

 { 7; 2 }

 { 7; 9 }

Where do you live?

\(\rightarrow\) What is your address?

Gọi số hs giỏi là a, hs khá là b, hs trung bình là c.

Ta có:

a/b = 2/3 , b/c = 4/5         => a/2 = b/3, b/4 = c/5

=> a/8 = b/12 = c/15   và  a + b + c = 35

Áp dụng tính chất dãy tỉ số bằng nhau, có:

      \(\frac{a}{8}=\frac{b}{12}=\frac{c}{15}=\frac{a+b+c}{8+12+15}=\frac{35}{35}=1\)

Suy ra:  a/8 = 1    => a = 8

           b/12 = 1     => b = 12

            c/15 = 1       => c = 15

Vậy số hs giỏi là 8 hs, hs khá là 12 hs, hs trung bình là 15 hs

My house is in the country. It has three bedrooms, and it has a small garden at the back. It's good for me because it's near my school. When you come in the front door, there is my living room. It's comfortable. Go straight on you can see my kitchen with the dining room and bathroom behind it. After that, there's my parents's bedroom anh finally you come to my bedroom. From there you canwalk straight into the garden. I love my house very much because it's where I relax after studying at school.

Section 3

1. likes

2. am going

Reading

Section 1

1. B

2. D

3. C

4. D

Section 2

1. True

2. False

3. True

4. False

Writing

Section 1

1. Viet Nam has a lot of beautiful lakes.

2. Ho Chi Minh city is the biggest city of three cities.

3. There isn't a bookshelf in my room.

4. The bus is behind the car.

5. I like the bedroom best in the house.

Tick nha