\(\frac{-30}{17}:\frac{-15}{-34}\)

\(=-\frac{30}{17}:\frac{15}{34}\)

\(=-\frac{30}{17}\cdot\frac{34}{15}=-\frac{34}{17}\cdot\frac{30}{15}=-2\cdot2=-4\)

\(\frac{-30}{17}:\frac{-15}{-34}\)

\(=\frac{-30}{17}:\frac{15}{34}\)

\(=\frac{-30}{17}.\frac{34}{15}\)

\(=\frac{-1020}{255}\)

\(=-4\)

\(\left(\frac{x}{7}+0,25\right)=\frac{-1}{28}\)

\(\frac{x}{7}+0,25=\frac{-1}{28}\)

\(\) \(\frac{x}{7}=\frac{-1}{28}-0,25\)

\(\frac{x}{7}=\frac{-2}{7}\)

\(x=2\)

Vậy \(x=2\)

2

Stepping into Phú Hòa Secondary School has been a truly promising experience, where I quickly noticed a significant shift in the learning environment. Instead of just rote memorization, this school actively encourages critical thinking and deeper knowledge exploration, helping me develop continuously. I'm particularly impressed by the interactive teaching methods and abundant resources like modern science labs and the digital library, all of which greatly support learning. Although I was a little overwhelmed at first, the inclusive and supportive culture from both friends and teachers has helped me adapt quickly. [Your New School's Name] is proving to be a wonderful environment where I feel challenged and truly grow, opening up countless new opportunities.

cre: me

I'm thrilled to talk about my new school. My new school is an amazing place to learn and grow. I've had the opportunity to meet many new friends, and the teachers are enthusiastic and friendly.

My new school has many modern facilities, such as a library, laboratory, and sports field. I particularly love the library, where I can find many interesting and engaging books. I also enjoy participating in sports activities on the school field.

The teachers at my new school are very dedicated and passionate. They not only teach us knowledge but also help us develop our skills and character. I feel very lucky to be studying under their guidance.

However, I did face some challenges when I first started at my new school. I had to get used to a new environment, new friends, and new learning styles. But thanks to the help of my teachers and friends, I quickly adapted and felt more comfortable.

Overall, I'm very satisfied with my new school. I believe that my new school will be a place where I can develop and achieve many successes in the future.

My new school is truly a wonderful place, and I'm excited to see what the future holds!

Olm chào em, cảm ơn đánh giá của em về chất lượng bài giảng của Olm, cảm ơn em đã đồng hành cùng Olm trên hành trình tri thức. Chúc em học tập hiệu quả và vui vẻ cùng Olm em nhé!

38 + 45 = 83

83

She seems tired.

In đậm là bằng gạch hai lần nha b.

I have a new book.

gạch chân 1 lần: I

gạch chân 2 lần: have

He has a new car

1 lần He

2 lần has

she buy some new books

gạch chân 1 lần: she

gạch chân 2 lần: buy

hay đâu

Hay j

4 chữ

How many people are there in your family

Bằng cách biến đổi các biểu thức, chúng ta có thể thấy rằng: A=123×123 B=121×(123+1)=121×123+121

Để so sánh, chúng ta cũng có thể viết A là (121+2)×123=121×123+2×123=121×123+246. Vì 246>121, nên A>B.

B=(121+2).(124-2)

B=123.122

Vì 123=123 và 123>122

Nên 123.123>123.122

Vậy A>B