(-92) : 21 . (-53) giúp e vs ạ

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Đáp án:

 

Giải thích các bước giải:

`(-92) : 21 . (-53)`

`= -92/21 . (-53)`

`= (-92 . -53)/21`

`= 4876/21`

`(-92) : 21 . (-53) `

`= (-92)/21 . (-53 )`

`= ((-92).(-53))/21 `

`= 4876/21 `

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XI. Viết lại câu sâu sao cho nghĩa không thay đổi. (10 điểm) 1. A year has twelve months. -> There are .......................................................................................................................... 2. Lan is more intelligent than her sister. -> Lan’s sister isn’t .............................................................................................................. 3. He looks after the sick people. -> He takes ........................................................................................................................... 4. Do you enjoy listening to music? -> Are you interested ..........................................................................................................? 5. What is your mother’s job? -> What does .......................................................................................................................? 6. We have a two - month summer vacation. -> Our summer vacation lasts .............................................................................................. 7. Remember to write a letter to me. -> Don’t …………………………………………………………………………………… 8. Vietnamese students have fewer vacations than American ones. -> American students ........................................................................................................... 9. It takes me about two hours each day to do my homework. -> I spend .............................................................................................................................. 10. Hoa is a hard student. -> Hoa studies .......................................................................................................................

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