Tìm x,

3/x-5=4/x

x/-2=4/y

Cho bốn số nguyên a,b,c,d thỏa mãn a/b=c/d (b ko =d) (b ko bằng -d)

Chứng minh rằng a+b/b+d=a-c/b-d

Các bạn giúp mih với

Tìm số nguyên x

-4/x=x/-9

3/x-5=2x/-12

how/julia/often/piano/the/does/play

What/Helem/his/sister/do/and/do/it's/hot/when

John/can play/piano/theage/five

We ........ to Nha Trang next month

a-travel , b- travelled , c- will travel , d- is travelling

Chọn ra đáp án đúng nhất

Mai: Would you like to go to theater with me?

a-yes,I am ,b-ok,thanks,c-yes, it is ,d-yes ,I"d love to

Lan: Why dont we play football in the school yard

a-no, we not,c-I dont think it is good idea,d-no,we didnt

Susan .........about the exam and she did very badly

a-dont know , b-didnt know , c-didnt knew , d - didnt known

My friend ....... judo twice a week

a-do , b-does ,c-play,d-did

Ayres Rock is not the ..........moutain............ the work

a-higher/on , b-higher/in , c- highest/on , d- highest/in