Tìm số nguyên x,y

x + xy + y=9

31
C. As a child, he didn’t like reading books, but now he finds it enjoyable.

32
C. I prefer hanging out with friends to playing computer games.

33
B. Mai is the youngest person in the group.

34
B. Unless Linda studies hard, she will fail the exam.

35
A. Although it snowed heavily, the explorers managed to walk to the village.

36
D. Tony doesn’t play the piano as skillfully as Anne.

37
B. Do you like a cup of coffee or do you like a glass of water?

38
A. There is lots of traditional food for you to enjoy.

39
B. My family has a custom of eating dinner at 7 p.m. every day.

Question 40
A. He spent two hours doing his homework.

Chứng minh: 

2+22+23+24+25+26+.......+259+260 chia hết cho 3

The Acropolis was built by the ancient Greeks.

The building was destroyed by the bomb.

All tour participants will be provided with a detailed itinerary free of charge.

Antibiotics are generally prescribed by doctors for chest infections.

The old woman should be helped across the street.

English is spoken by people all over the world.

The tower blocks are going to be pulled down.

Traffic has been banned from the city center by the city council.

\(A=\)\(\dfrac{2024}{2023+1}\) ,\(B=\dfrac{2023}{2022+1}\)

\(A=\dfrac{2023+1}{2023+1}\)\(=1\)

\(B=\dfrac{2022+1}{2022+1}=1\)

So sánh:

Vì 1 = 1 nên A = B

tìm các số nguyên x và y sao cho: 3xy + x - 6y = 21