Question

4/x=8/x+1

Answer 1

ĐKXĐ: $x\ne 0; x\ne -1$

$\frac{4}{x}=\frac{8}{x+1}$

$\Rightarrow 4(x+1)=8x$

$\Rightarrow 4x+4=8x$

$\Rightarrow 8x-4x=4$

$\Rightarrow 4x=4$

$\Rightarrow x=1$

Answer 2

`4/x= 8/(x+1)` với `x ne 0;-1`

`4(x+1)= 8x`

`4x+4=8x`

`8x-4x=4`

`(8-4)x=4`

`4x=4`

`x= 4/4`

`x=1`

Vậy `x=1`