(3/4x-8/13).(2,5+-7/5:x)=0 giúp e câu trên vs ạ

`(3/4x-8/13).(2,5+ -7/5÷x)=0`

`3/4x-8/13=0` hoặc `2,5+ -7/5÷x=0`

$\text{* $\dfrac{3}{4}$x – $\dfrac{8}{13}$ = 0.}$

`⇒3/4x=0+8/13.`

`⇒3/4x=8/13.`

`⇒x=8/13÷3/4.`

`⇒x=8/13. 4/3.`

`⇒x=32/39.`

$\text{* 2,5 + $\dfrac{-7}{5}$ ÷ x= 0.}$

`⇒-7/5÷x=0-2,5`

`⇒-7/5÷x=-2,5`

`⇒x=-7/5÷-2,5`

`⇒x=-7/5÷-25/10`

`⇒x=-7/5. -10/25`

`⇒x=14/25`

$\text{Vậy x = $\dfrac{32}{39}$ hoặc x = $\dfrac{14}{25}$.}$