Tìm số nguyên x biết: a) 3x + 27 = 9 b) 2x + 12 = 3(x – 7) c) 2x2 – 1 = 49

Các câu hỏi liên quan

Giúp mik với mình cảm ơn Bài 11: Viết lại các câu sau, sử dụng liên từ trong ngoặc. ​1.​I don’t eat cheese. I don’t eat butter. (or) ​ ​2.​I like him. He’s annoying. (but) ​ ​3.​We’re having salad for lunch. We’re not very hungry. (so) ​ ​4.​She doesn’t use much suncream. She has very pale skin. (although) ​ ​5.​This year, he’s been to China. He has also been to Brazil. (and) ​ ​6.​Would you like to go to Paris? Would you rather go to Budapest? (or) ​ ​7.​He’s very tired today. He went to bed very late last night. (because) ​ ​8. ​It looks very near. It’s quite a long way away. (although) ​ ●​BÀI TẬP TỔNG HỢP NÂNG CAO Bài 12: Viết các câu sau dựa vào các từ cho sẵn: ​1.​Which soup/ you/ like? - I / like/ chicken soup. ​ ​ ​2.​Where/ Ann/ usually go/ in the evening? - She/ usually/ go/ to the cinema. ​ ​ ​3.​Who/ Carol and Bill / visit/ on Sundays? - They/ visit/ their grandparents. ​ ​ ​4.​What/ David/ usually drink/ with/ his breakfast? - He/ usually/ drink/ coffee. ​ ​ ​5.​When/ you/ watch TV? - I/ watch TV/ in the evening. ​ ​ ​6.​Why/ Rachel/ stay/ in bed? She/ stay/ in bed/ because/ she/ be/ sick. ​ ​ ​7.​How/ you/ go/ to the office? - I/ go/ to the office/ by bicycle. ​ ​ ​8.​Whose laptop/ your sister/ carry? - She/ carry/ mine. ​ ​ Bài 13: Đặt câu hỏi cho các cụm từ được gạch chân dưới đây. ​1.​Minh usually takes exercises after getting up. ​ ​2.​I brush my teeth twice a day. ​ ​3.​Nga has an appointment at 10.30 this morning. ​ ​4.​They live in the city center. ​ ​5.​I like “Tom and Jerry” because it’s very interesting. ​ ​6.​She is worried about the next examination. ​ ​7.​Music makes people different from all other animals. ​ ​8.​They do their homework at night. ​ ​9.​I like the red blouse, not the blue one. ​ ​10.​That is an English book. ​ ​11.​He studies piano at the university. ​ ​12.​My father is a teacher. ​ ​13.​My favorite musician is Trinh Cong Son. ​ ​14.​We take a holiday once a year. ​ ​15.​It takes four hours to get there. ​ ​16.​He earns a hundred pounds a week. ​ ​17.​This book is 30.000 dong. ​ ​18.​The car is expensive. ​