Hộ em vs 
K
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Những câu hỏi liên quan
O
16 tháng 3 2022
Bài 1
a) \(\dfrac{3}{8}+\dfrac{5}{8}=\dfrac{8}{8}=1\)
b) \(\dfrac{3}{4}+\dfrac{-7}{16}=\dfrac{12}{16}+\dfrac{-7}{16}=\dfrac{5}{16}\)
c) \(2\dfrac{17}{20}-\dfrac{1}{2}+3\dfrac{3}{20}=\dfrac{57}{20}-\dfrac{1}{2}+\dfrac{63}{20}\)\(=\dfrac{47}{20}+\dfrac{63}{20}=\dfrac{110}{20}=\dfrac{11}{2}\)
d) \(\dfrac{2}{3}-2\dfrac{1}{8}+\dfrac{7}{24}=\dfrac{2}{3}-\dfrac{17}{8}+\dfrac{7}{24}=\dfrac{16}{24}-\dfrac{51}{24}+\dfrac{7}{24}=\dfrac{16-51+7}{24}=\dfrac{-28}{24}=\dfrac{-7}{6}\)
Bài 2 :
a) \(x-\dfrac{7}{4}=3\)
\(x=3+\dfrac{7}{4}\)
\(x=\dfrac{19}{4}\)
b) \(x-\dfrac{1}{2}=\dfrac{4}{16}\cdot\dfrac{8}{3}\)
\(x-\dfrac{1}{2}=\dfrac{2}{3}\)
\(x=\dfrac{2}{3}+\dfrac{1}{2}\)
\(x=\dfrac{5}{6}\)
c) \(\dfrac{15}{11}\div x=\dfrac{45}{22}\)
\(x=\dfrac{15}{11}\div\dfrac{45}{22}\)
\(x=\dfrac{2}{3}\)
d) \(\dfrac{8}{3}-2x=\dfrac{8}{5}-1\)
\(\dfrac{8}{3}-2x=\dfrac{3}{5}\)
\(2x=\dfrac{8}{3}-\dfrac{3}{5}\)
\(2x=\dfrac{31}{15}\)
\(x=\dfrac{31}{15}\div2\)
\(x=\dfrac{31}{30}\)
DT
Đỗ Thanh Hải
CTVVIP
15 tháng 7 2021
Câu 1: She doesn't live in London because she doesn't know anyone there
->She'd.....live in London if she knew anyone there ......................................................................................................
Câu 2: I can't live in the country because I can't find a job there
->I'd...........live in the country if I could find a job there..............................................................................
Câu 3: I don't have a spare ticket. I can;t take you to the concert
->If I.........had a spare ticket, I could take you to the concert.................................
Câu 4: The schoolchildren sowed some seed, but they forgot to water them so they didn't go
-> If the children .....hadn't forgot to water the seeds, they would have grown................................
Câu 5: They don't understand a problem. They won't find a solution
-> If they...
Câu 6:He sit too much. He isn't fit
-> If he........didn't sit too much, he would be fit.....
K
7 tháng 7 2021
1. How much is this watch?
2. How much are these beautiful scarves?
3. Can you tell me how to get to Dong Nai post office?
4. Can you tell me how to get to the station?
5. Peter works hard
6. There aren't any bottles on the shelf
7. We don't have time to prepare the speech
DT
Đỗ Thanh Hải
CTVVIP
23 tháng 5 2021
27 will come
28 show
29 owns
30 called
31 has seen
32 have seen
33 was having - knocked
34 left - became
35 took
36 haven't met - got
37 was
38 are preparing
39 stayed - rode - had borrowed
40 visited
41 has worked
42 worked
43 build - fly
44 have lost
45 are moulding
46 arrived
47 have - been
48 Have - received
49 had left
5 saw