tính bằng cách thuận tiện nhất 2/9+1/5+7/9+4/5+2=
K
Khách
Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
19 tháng 1 2022
1. My father ( go )goes to work everyday.
2. She (not/ go)doesn't go to school on Sundays.
3. Vinh and Lan (do)are doing their homework now.
4. They ( listen)are listening to music the present ?
5. He ( brush )brushé his teeth every morning ?
6. His sister (not / study)isn't studying English now. She ( watch)is watching T.V
7. We ( not/go)won't go to school next Sunday.
8. Mrs Ha (clean)cleans the room in the morning.
9. What you (do)will you do/ are you going to do next summer ?
10. Mrs Bon ( cook )cooks lunch for you every day?
21 tháng 1 2022
1. goes
2. doesn't go
3. are doing
4. are listening
5. brushes
6. isn't studying/ is watching
7. don't go
8. cleaned
9. do you do
10. cooks
11. don't play/play
12. are reading
13. is going
14. teaches
15. don't you have
16. isn't studying
17. ride
18. do you do
19. are
20. don't go/stay
NN
3
19 tháng 1 2022
They often play catch at recess.
We could go on the trip because we could afford it.
hok tốt nha
ok nha
19 tháng 1 2022
I haven't been able to concentrate recently _____work. I don't know what it 's at eleven o' clock. after the fog had lifted.
NN
1
19 tháng 1 2022
If people plant more trees around this area, there will be no floods.
hok tốt nha
ok nhaaa
19 tháng 1 2022
They are worried that some people 'll use robots for bad things.
hok tốt nha
ok
2/9+1/5+7/9+4/5+2
=(2/9+7/9)+(1/5+4/5)+2
=1+1+2
=4
\(\frac{2}{9}+\frac{1}{5}+\frac{7}{9}+\frac{4}{5}+2 \)
=(2/9+7/9)+(1/5+4/5)+2
=9/9+5/5+2
=1+1+2
=4