Đáp án + Giải thích các bước giải:
`5/6 -( 1/2 + x ) = 1/5 - 2x + ( 1/3 - 1/5 )`
`=> 5/6 - 1/2 - x = 1/5 + 1/3 -1/5 - 2x`
`=> 1/3 - x = 1/3 - 2x`
`=> -x + 2x = 1/3 - 1/3`
`=> x = 0`
Vậy `x=0`
Đáp án:
`5/6 - (1/2 + x) = 1/5 - 2x + (1/3 - 1/5)`
`-> 5/6 - 1/2 - x = 1/5 - 2x + 2/15`
`-> (5/6 - 1/2) - x = (1/5 + 2/15) - 2x`
`-> 1/3 - x = 1/3 - 2x`
`-> 1/3 - 1/3 = x - 2x`
`-> -x = 0`
`-> x = 0`
Vậy `x = 0`
IV. Hãy chọn đáp án đúng A, B, C, hoặc D để hoàn thành những câu sau 1. – “What is this?” – “It is___________ ” A. A B. an C. the D. this 2. Lesson one is short________ lesson seven is long. A. Or B. but C. so D. because 3. ________ children are there in your family? A. How many B. How much C. How old D. How big 4. My family live in a flat_________ the sixth floor of a high building. A. On B. in C. above D. by 5. “________ ?” – “Monday.” A. What is today B. What today is C. When is today D. When today is 6. ” I’m so ________, Mum. Can you give me something to drink ?” A. Hungry B. Thirsty C. Sleepy D. angry 7. Most people________ on Sundays. A. aren’t working B. doesn’t work C. don’t work D. not work 8. – “How________ are you?” – ‘I’m ten.” A. Old B. older C. well D. good 9. – “Can Bob play chess?” – “No, he__________ ” A. doesn’t B. does C. can D. can’t 10. “What__________________ your brother often ________ in the evening?” A. do – do B. does-does C. does – do D. do-does
1 I told her to go to the supermarket 2 the children broke the window 3 Their grandmother told them this story when they visited her last week. 4. Tim ordered this train ticket for his mother. 5. She showed her ticket to the airline agent. 6. Jim baked this cake yesterday.. 8. The shop assistant handed these boxes to the customer. 9. The board awarded the first prize to the reporter. 10 i drove my new car to my officer 11. The committee appointed Alice secretary for the meeting. 12 we did not study El yesterday 13 she taught china for me 2 years ago 14. We gave Ann some bananas and some flowers. 15. They moved the fridge into the living room Chuyển từ chủ động qua bị động và bị động qua chủ động nhé, làm uy tín chút giúp mình nha
Vẽ chibi/anime ....................
a+a+a=30 a+b+b=18 b-c=10 1/2c=?; a+b+c=? Giúp em vớiiii, giải thích ạ
Vẽ đậu mầm .........................................
Cho $x+y=4$ $(x,y>0)$. Tìm Min A biết: Min A=$\frac{x^2}{4}+\frac{y^2}{x}+x+y$
cmr với mọi m,n thuộc z: mn(m⁴-n⁴) chia hết cho 30
Giúp mình làm bài này với ạ .🙇
III. Hãy đặt câu hỏi cho những câu trả lời sau. 1. No, there isn’t a TV in my bedroom. ______________________________________________ 2. My school? It is about 2 kilometres from my house. ______________________________________________ 3. The film is at 9.00 tonight. ______________________________________________ 4. Yes, the black shoes are mine. ______________________________________________ 5. When I have free time, I often read picture books. ______________________________________________
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