Question

tìm x,      x-1/ x+5= 6/7

Answer 1

Ta có \(\frac{x-1}{x+5}=\frac{6}{7}\)

\(\Rightarrow7\cdot\left(x-1\right)=6\cdot\left(x+5\right)\)

\(\Rightarrow7x-7=6x+30\)

\(\Rightarrow7x-6x=30+7\)

\(\Rightarrow x=37\)

Answer 2

khó thế            

Answer 3

đây là toàn lớp 7(mình viết nhầm)

Answer 4

​X-1/x-5=6/7

Answer 5

Các bạn làm sai hết rồi.

Answer 6

x-1/x-7=6/7

7.(x-1)=6.(x-5)

7x-7=6x-30

7x-6x= -30+7

7x-6x= -23

1x= -23

x= -23/1

x= -23

Answer 7

x−1x−5=67" role="presentation" style="border:0px; box-sizing:border-box; direction:ltr; display:inline-table; float:none; font-size:18.08px; line-height:0; margin:0px; max-height:none; max-width:none; min-height:0px; min-width:0px; overflow-wrap:normal; padding:1px 0px; position:relative; white-space:nowrap; word-break:break-word; word-spacing:normal" class="MathJax_CHTML mjx-chtml">x−1x−5=67

$\iff 6\left(x-5\right)=7\left(x-1\right)$

$\iff 6x-30=7x-7$

$\iff 6x-7x=30-7$

$\iff -x=23$

$\iff x=-23$

Vậy $x=-23$.

Answer 8

-1/6 + x=1