Đáp án:
Giải thích các bước giải:
$\dfrac{1}{3}: x= \dfrac{-1}{2}- \dfrac{2}{3}$
$\dfrac{1}{3}: x= 1$
$x= \dfrac{1}{3}: 1$
$x= \dfrac{1}{3}$
2/3 + 1/3 : x = -1/2
1/3 : x = (-1/2) - 2/3
1/3 : x = (-3/6) + (-4/6)
1/3 : x = -7/6
x = 1/3 : (-7/6)
x = 1/3 . (-6/7)
x = -6/21 = -2/7
4. Miss Van is a journalist. She (not write) for Lao Dong Newspaper. She................. (write) for Nhan Dan Newspaper.
2. What your sister....................... (do) now? - She.................. (cook) dinner in the kitchen.
Read the passage then check true or false sentence (2 pts) Lan is 12 years old now. she will be 13 on her next birthday, May 25th. She will have a party for her birthday. She will invite some of her friends. She lives at 24 Ly Thuong Kiet Street. The party will be at her home. It will start at five o'clock in the evening and finish at nine. 23. Lan is 13 now 24. She will be 12 on her next birthday 25. The party will be at her school 26. She will not invite any friends 27. The party will start at five in the evening 28. It will finish at nine
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1)The..........used on many farms are polluting the water supply(pest) 2)I'm satisfied because my secretary solved the problem.............(efficient) 3)don't go to Vung Tau in the peak season because it'll be hot anhd.................(crowd) 4)i don't know what to wear tonight.Do you have any.?(suggest) 5)we are going to...........the anniversary of our 50th wedding.(celebration) 6)the machine has an............fault althought it was bought three days ago(electricity) 7)didn't win/I am disappointed/the first prize/that my son/in the speaking contest 8)many farming chemicals/polluted/the use of/The soil becomes/because of 9)ride your bike carefully or you will cause an accident =>if you don't 10)he said to miss kathy,"How often do you pay a visit to your country?" =>he asked miss kathy 11)we spent one day traveling to our hometown =>it took us 12)these students always listen to their teachers attentively these students always pay
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She................. (write) for Nhan Dan Newspaper.
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