cho $\frac{a}{b}$= $\frac{c}{d}$ chứng minh 2a+3b=2c+3d 2a-3b=2c-3d

làm thơ đi vote giúp và góp ý https://hoidap247.com/cau-hoi/1043730

Giải giúp mình câu 1 và 2 với cảm ơn nhiều

tìm các số nguyên x,y thỏa mãn:3x-24=16y+căn bậc 2 của(9x^2+16x+96)

1.Tính A = 3/5 . 4/7 - 2/7 . 3/5 - 3/5 . 6/7 B = (1+ 1/1.3) . (1+ 1/2.4) . (1+ 1/3.2) ....... (1+ 1/98.100)

các bạn ơi viết bài văn giới thiệu bản thân bằng tiếng anh giúp mik vs nhớ là cuối bài kết bàng that all about my self thank you listenning

Làm avatar thật đẹp rồi khắc chữ lethanhhai5c vào để làm ảnh đại diện nhé ! Mong mod đứng xóa ! Em rất cần !

Cho 4,8g Mg vào 1,5l dd H2SO4 có pH =2 chất nào phản ứng hết chất nào dư và dư bao nhiêu gam thể tích của h2

REPORTED SPEECH 16. She wondered “Why did the price go up so often?” ______________________________________________________ 17. The girl asked “Can you play the guitar" ______________________________________________________ 18. She asked me "How did you hear about the course?" _________________________________________________________ 19. “If you want to learn English, I can help you" John said. ____________________________________________________________ 20. He said to me "I have something to show you now" _________________________________________________________ 21. “Where are you studying? ” Mr Nam asked ______________________________________________ 22. She said “I'm leaving here for Hue tomorrow" _________________________________________________ 23. “Please call me at 6 o'clock tomorrow morning" said Mai. _______________________________________________________________ 24. “I will come with you as soon as I am ready” _____________________________________________________ 25. "Are you interested in this Language Center?” asked Lan. ____________________________________________________________ 26. “I must go now” The father said to us __________________________________________________________ 27. “We will spend our holiday in Dalat next month” said Chi. ______________________________________________________________- 28. “Who puts the salt in my cup of coffee?" asked Peter ________________________________________________________ 29. “Do you live here?” Liz asked. _______________________________________________________ 30. She asked me “Why do you come here late?” ______________________________________________________ 31. “What does your son want to learn?” I said to Linh. ______________________________________________________ 32. He asked the girl "Can you play the piano?" _____________________________________________________ 33. "You must come today" Hoa said. _____________________________________________________ 34. “I'm having a good time here" Said Mary. _____________________________________________________ 35. "I don't understand what you are saying” Tom said to us. _____________________________________________________ 36. Hoa told John “Do you like pop music?” _____________________________________________________ 37. They asked me, “What are you doing at 7 o'clock yesterday when we called you?" _____________________________________________________ 38. He asked her, “When do you leave this place?" _____________________________________________________ 39. We said, “What time dopes the plane arrive ?" _________________________________________________ 40. She said to me, “Did they tell you when they left? " _____________________________________________________ 41. She said, "Are you wearing your rain coat, Ann?" _____________________________________________________ 42. Mr Smith said to me, "Where are you going on your holiday?" _____________________________________________________ 43. His mother asked, "Who put these books here, John?" _____________________________________________________ 44. She said, “How do you go to the circus?" _____________________________________________________ 45. My mother asked, “How many classes are there in your school?" _____________________________________________________ 46." Are you going to visit your aunt tomorrow?" asked Tom. _____________________________________________________ 47. "Listen to me and don't make a noise," said to his students. _____________________________________________________ 48. “The sun always rises in the east" said our teacher. _____________________________________________________ 49. "I didn't steal your fur coat yesterday" said Mai to Ba. _____________________________________________________ 50. “Let me help you make the cakes," Judy said _____________________________________________________ 51. “You must do your homework every day," said Mrs. Brown to us. _____________________________________________________ 52. "Will we read the story?" Bill asked his teacher. _____________________________________________________ 53. Mike said, “I can't go to school today because I'm ill” _____________________________________________________ 54. Peter complained, “I haven't caught any fish at all.” _____________________________________________________ 55. Van said “I don't know where Ann is." _____________________________________________________ bỏ câu hỏi nha hứa vote đủ

các bạn giúp mik vs giải hộ mik câu 5 và 6