9690000 đồng là đúng đó

x+2/11+x+2/12+x+2/13=x+2/14+x+2/15

=>x+2/11+x+2/12+x+2/13-x+2/14-x+2/15=0

=>(x+2).(1/11+1/12+1/13-1/14-1/15)=0

mà 1/11>1/12>1/13>1/14>1/15

=>1/11+1/12+1/13-1/14-1/15 khác 0

=>x+2=0

=>x=-2

vậy x=-2

Đề bài: Kết hợp 2 câu thành 1 (bằng who hoặc which)

1, There are my pets.

I like them very much.

=> There are my pets which I like very much.

2, Tom is the best student.

He always get good marks.

=> Tom is the best student who always gets good marks.

3, I like cartoon programme.

I often watch it on VTV2.

=> I like cartoon programme which I often watch on VTV2.

4, Luan is a hand some boy.

I like him best.

=> Luan is a hand some boy who I like best.

Bài 1 : Điền giới từ thích hợp

1. I am going to New york for my vacation next week. I am going to stay in the Park Plaza Hotel for two days.

2. What about going to the zoo this Sunday ?

3. Lan, my close friend is thinking of spencling her holiday on a farm. She going to stay with her grand parents on the weekends.

4. The good of the bowls is delicious.

A,A

làm bạn mình nhá

1. Over the past two years the cost of living ....... considerably.
A. rises
B. rose
C. was rising
D. has risen
2. I came .......... an old friend while I was walking along the street.
A. across
B. into
C. over
D. for
3. The book .......was a bit expensive.
A. I bought
B. That I bought it
C. I bought that
D. What I bought
4. Would you like a beer ? Not while i am ...........
A. in the fact
B. in order
C. on duty
D. under control
5. He's accustomed to ..............to music before bedtime.
A. listen
B. listening
C. to listen
D. be listening
6...................take a taxi ,you 'll be take for the lettuce
A. Unless you
B. If you not
C. Because of
D. For you

1. I am very short I wasn't able to help with your work.

=> I wish I were tall enough to help with your work.

2. Linda said she was sorry she had not attended the meeting.

=> Linda apologized for not attending the meeting.

3. Eventually he succeeded in making her answer the question.

=> Eventually he managed to make her answer the question.

4. He lost his money simply because he wasn't careful.

=> If he had been careful, he wouldn't have lost his money.

Choose the word having the underlined part pronunced differently in each time.

1. A. purpose B. bottle C. collect D. second

2. A. heard B. pearl C. heart D. earth

3. A. button B. circus C. suggest D. future

4. A. sofa B. away C. banana D. occasion

5. A. burst B. curtain C. furniture D. cure

77.(-7)-33.7-10.(-7)

=77.(-7)-(-33).(-7)-10.(-7)

=(-7).[77-(-33)-10]

=(-7).(77+33-10)=(-7).100=-700

1 run  /    do not feel   /        stay

2   Does you join    /          will come  

3  you start playing    //          it is  starting    

4    do you watching      /        is

mình chưa chắc đâu nha bạn