Gúp mk mk like cho huhu
K
Khách
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Những câu hỏi liên quan
NP
3
OQ
15
9 tháng 9 2015
Vi 2x+7y-3z=2 nen 4x+14y-6z=4
3y+14y-3y=4
14y=4 nen y=2/7
x=3/14
z=1/7
Bn thu tinh lai gium mk nhe !
IL
12
NG
7
ZZ
2
Câu a, b bạn làm rồi nên mình không làm nha.
c. I didn't do the washing last week. I did the washing yesterday.
d.We didn't have a shower everyday. We had a shower every 3 days.
e.They didn't return home late last night. They returned home early last night.
f. Hoa didn't live in Ha Noi last year. She lived in Hue.
g. Mr. Ha didn't teach Geography. He taught English.
h. Liz didn't eat fish. She ate noodles instead.
i. My mother didn't iron my clothes. I ironed my clothes myself.
c. We didn't have a shower every day. We had a shower every 3 days.
d. They didn't return home last night. They returned home early last night.
e. Hoa didn't live in Ha Noi last year. She lived in Hue.
f. Mr. Ha didn't teach Geography. He taught English.
g. Liz didn't eat fish. She ate noodles instead.
h. My mother didn't iron my clothes. I ironed my clothes myself.