Tìm các số nguyên x , y , z , t 12/-6 = x/5 = -y/3 = z/-17 = -t/-9

2 câu trả lời

Đáp án+Giải thích các bước giải:

$\\$ Ta có: `12/-6 = x/5 = (-y)/3 = z/-17 = (-t)/-9`

$\\$ `=>-2=x/5=y/(-3)=z/(-17)=t/9`

$\\$ `<=>{(x/5=-2),(y/-3=-2),(z/-17=-2),(t/9=-2):}`

$\\$ `<=>{(x=-2.5=-10),(y=-2.(-3)=6),(z=-2.(-17)=34),(t=-2.9=-18):}`

$\\$ Vậy `x=-10;y=6;z=34;t=-18`

Đáp án:

 

Giải thích các bước giải:

 `[12]/[-6]=x/5 =-y/3 =z/[-17]=[-t]/[-9]`

`<=>-2=x/5 =-y/3 =z/[-17]=t/9`

Ta có:

`-2=x/5`

`<=>x=5.(-2)`

`<=>x=-10`

`-2=-y/3`

`<=>y=-3.(-2)`

`<=>y=6`

`-2=z/[-17]`

`<=>z=(-17).(-2)`

`<=>z=34`

`-2=t/9`

`<=>t=9.(-2)`

`<=>t=-18`

Vậy `x=-10;y=6;z=34;t=-18`

Câu hỏi trong lớp Xem thêm

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