1 giờ 40 phút 48 giây

bài toán dài như răng thì đọc lâu mới hiểu

1. Tom said to me" If I have spare time, I will go fishing with you".

⇒ Tom told me that if he had spare time, he would go fishing with me.

2.The teacher told us" If it rains tomorrow, we can go for a picnic".

⇒Teacher told us if it rained the following day, we could go for a picnic.

3. "Unless you study harder, you will fail the exam", said his parent.

⇒His parent said that unless he studied harder, he would fail the exam.

4. " If she goes to the party , she will have a lot of fun." said Peter.

⇒ Peter said that if she went to the party, she would have a lot of fun.

5." If you need help, I will be willing to help you with the difficult exercises", my sister said.

⇒My sister said that if I needed help, she could be willing to help me with the difficult exercises.

6.Lida said,"I would have come to be party if I hadn't been so busy last week"

⇒ Lida said that she could have come to the party if she hadn't been so busy the previous week.

7.Tom told me" If I were you, I would look for another job"

⇒ Tom told me that if he were me, he would look for another job.

8. My friend said to me, " What would you do it someone gave you a million pounds?"

⇒ My friend asked me what would I do if someone gave me a million pounds.

9. The garener said" If I didn't water these plants yesterday, they could die."

⇒The garener said that if he didn't water those plants the previous day, the could die.

10.The doctor said to the patient" You won't feel better unless you takes these medicine"

⇒The doctor told the patient that he wouldn't feel better unless he took those medicione.

theo đề bài ta có hiệu giữa tử số và mẫu số là 15 , tỉ số là 51/68 = 3/4
 hiệu số phần bằng nhau là : 4 -3 =1

tử số là 15:1 x 3 = 45
 Mẫu số là 15 : 1 x 4= 60

vậy phân số đó là : 45 / 60

Dễ hiểu lắm ủng hộ mk  nhoaaa bn

\(3A=1.2.3+2.3.\left(4-1\right)+...+100.101.\left(102-99\right)\)

\(3A=1.2.3+2.3.4-1.2.3+.......+100.101.102-99.100.101\)

\(3A=100.101.102\)

\(A=\frac{100.101.102}{3}\)

\(A=343400\)

mình hông biết

Rút gọn : 51/68 = 3/4.

Tử số là :

      15 : ( 4 - 3 ) x 3 = 45

Mẫu số là :

      15 + 45 = 60

Vậy phân số đó là 45/60.

                Đáp số : 45/60.

Chúc em học tốt ^^!

Giải theo tìm hai số khi biết hiệu và tỉ số.Giản lược 51/68=3/4 Mẫu số là: 15:(4-3)x4=60 Tử số là 60-15=45. Phân số đó là 45/6

Bấm mình nhé

Ta có : 6 căn 5 = căn 180 

5 căn 6 = căn 150

tự so sánh nhé

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