\(23\times45\times\left(45\times24-69\right)\times67\)

\(=23\times45\times\left(1080-69\right)\times67\)

\(=23\times45\times1011\times67\)

\(=1035\times1011\times67\)

\(=1046385\times67\)

\(=70107795\)

\(125,8\div125=1,0064\)

\(\dfrac{7}{9}+\dfrac{3}{5}\times2\)

\(=\dfrac{7}{9}+\dfrac{3\times2}{5}=\dfrac{7}{9}+\dfrac{6}{5}=\dfrac{35+54}{45}=\dfrac{89}{45}\)

Em thường xem video hướng dẫn trên YouTube, đọc sách và làm bài tập để nâng cao kiến thức của mình.

Dear [Name],

I hope this email finds you well. I wanted to share with you about my recent holiday in [city name]. It was an amazing experience! The city is full of life and culture. I visited many famous landmarks such as [landmark names] and tried some delicious local food like [food names].
One of the highlights of my trip was visiting the local market where I bought some souvenirs for my family and friends. I also met some friendly locals who were happy to show me around and share their knowledge about the city.
Overall, it was a wonderful holiday and I can't  wait to go back and explore more. I hope you are doing well and I look forward to hearing about your latest adventures.

Best regards,

[Your Name]

16. have to finish the work today.
17. play golf than tennis.
18. is difficult to speak English fluently.
19. walking in the rain. 20. to not stay up late.
21. How tall is the Big Ben Clock Tower?
22. How long is the Mekong River? 23. Lan's father is a careful driver.
24. playing soccer to watching TV.
25. easy to learn how to use a computer.
26. tallest person in our class.
27. about two hours each day doing my homework.
28. How much do these rackets cost? 29. When were you born?
30. to the supermarket by walking.
31. My sister goes... where? The sentence is incomplete.

\(3499+1104\div23-75\)

\(=3349+48-75\)

\(=3547-75\)

\(=3472\)

Chào bạn, để giúp được bạn tốt hơn, mình cần thêm thông tin về cuộc thi đại sứ văn hoá đọc mà bạn đang tham gia. Bạn có thể cung cấp thêm thông tin về cuộc thi, ví dụ như mục đích của cuộc thi, nội dung yêu cầu, thời gian diễn ra, v.v...? Sau khi có thông tin đầy đủ, mình sẽ giúp bạn viết nội dung giới thiệu bản thân cho cuộc thi đó nha.

Hiệu hai số chẵn là: \(\left(7-1\right)\times2=12\)

\(x\div4,5=6\)    \(6,25\times x+3,75\times x=30\)

\(x=6\times4,5\)    \(x\times\left(6,25+3,75\right)=30\)

\(x=27\)            \(x\times10=30\)

                       \(x=30\div10\)
                       \(x=3\)