1. (+) I have already done this home work.
(-) I haven't done this home work.
(?) Have you done this homework?
2. He has washed the car
He hasn't washed the car.
Has he washed the car?
3. She has already eaten this cake.
She hasn't eaten this cake.
Has she eaten this cake?
4. I have been to London.
I haven't been to London.
Have I been to London?
5. She has taught English.
She hasn't taught English.
Has she taught English.
Nhớ kiểm tra lại xem có sai sót ko nhé

2

3,7

x:2= 3+15
x:2= 18
x= 18\(\times\)2
x= 36
 

x:2= 18
x= 36

HELP ME PLSSS