Bài `1:`
`a) A=(-2 1/5+2/7-12/13)-((-5)/7+1/13)`
`= 2/7 - 12/13 + 5/7 - 1/13`
`=(2/7+5/7)-(12/13+1/13)-11/5`
`=1-1-11/5`
`=(-11)/5`
Vậy `A=(-11)/5`
`text{Đáp án + Giải thích các bước giải}`
`a)`
`A=(-2 1/5+2/7-12/13)-((-5)/7+1/13)`
`=(-11/5+2/7-12/13)-((-5)/7+1/13)`
`=-11/5+2/7-12/13+5/7-1/13`
`=-11/5`
Vậy `A=-11/5`
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Toan trắc nghiệm thôi hứa 5 sao và cảm ơn Minh wishes he ____ English perfectly well. (1 Điểm) A. spoke B. speaks C. is speaking D. has spoken 3010. They ____ go on holiday when they lived in the countryside. (1 Điểm) A. not use to B. weren’t use to C. didn’t use to D. hadn’t used to 3111. The expert explained that the upper _______ of the bridge was in a very bad condition. (1 Điểm) A. building B. structure C. foundation D. roof 3212. Something _______ immediately to prevent teenagers from _______ in factories and mines. (1 Điểm) A. should be done – being exploited B. we should do - exploiting C. should do – be exploited D. should have done – exploited 3313. In 1978, the south Cat Tien parks were put _______ the State’s protection. (1 Điểm) A. above B. with C. of D. under 3414. Architect Kasik is honoured with his statue in Hoi An in _______ for his restoration work done at the My Son Sanctuary. (1 Điểm) A. recognition B. admiration C. agreement D. knowledge 3515. This car _______. (1 Điểm) A. was manufactured in Japan by Toyota last year. B. was manufactured by Toyota last year in Japan. C. was manufactured last year in Japan by Toyota. D. last year was manufactured in Japan by Toyota. 3616. It _______ that China dug up the ocean floor to build artificial islands. (1 Điểm) A. would be said B. is said C. says D. said 3717. The Thang Long Imperial Citadel was built on the location of a Chinese _______ dating from the 7th century. (1 Điểm) A. border B. soldier C. battle D. fortress 3818. The situation _______ to continue. (1 Điểm) A. can’t allow B. can’t be allowed C. can’t have allowed D. can’t be allowing 3919. The public suggested that the factories _______ with waste treatment system. (1 Điểm) A. would equip B. would be equipped C. should equip D. should be equipped 4020. I recommend you _______ to Hue and see the festivals there. (1 Điểm) A. visit B. going C. go D. visiting 4121. You _______ try beef noodles in Hue. (1 Điểm) A. shall B. do C. have D. must 4222. I bought some key chains as _______ for my friends. (1 Điểm) A. sites B. rewards C. souvenirs D. complexes
Theo em, việc bác trích dẫn lời của 2 bản tuyên ngôn độc lập thể hiện sự khôn khéo nào ?
Chọn các từ và điền vào chỗ trống: entertain maths nation relax safe profession enjoy employ attend. crowd 1. The police gave him protection for his own ................ 2. How many times do I have to ask you to pay.................? 3. The company made hundreds of....................... redundant. 4. The store was........................... with shoppers. 5. The show brought ..................to millions of viewers. 6. She listens to classical music for ........................ 7. Cinema is a medium of mass....................... 8. He can calculate very quickly. He has an amazing ability to solve ................ problems. 9. In 1963 he was appointed...............of history. 10. Dang Thai Son is a Vietnamese pianist with an............reputation. Giúp em với ạ
Mn giải mk bài 1, 2 vs ạ mk đg cần rất gấp ạ Mk cảm ơn
A=15%(|3/2-9/|+1,25)-9:(-1 mũ 2 +1 mũ 2)
Chia các động từ trong ngoặc ra thì simple past hoặc present perfect:
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