`(3/4x-9/16).(1/3+ -3/5÷x)=0`
`3/4x-9/16=0\text{ hoặc }1/3+ -3/5÷x=0`
$\text{* $\dfrac{3}{4}$x - $\dfrac{9}{16}$ = 0.}$
`⇒3/4x=0+9/16.`
`⇒3/4x=9/16.`
`⇒x=9/16÷3/4.`
`⇒x=9/16. 4/3.`
`⇒x=3/4.`
$\text{* $\dfrac{1}{3}$ + $\dfrac{-3}{5}$ ÷ x= 0.}$
`⇒-3/5÷x=-1/3.`
`⇒x=(-3/5)÷(-1/3).`
`⇒x=(-3/5).(-3/1).`
`⇒x=9/5.`
$\text{Vậy x = $\dfrac{3}{4}$ hoặc x = $\dfrac{9}{5}$.}$
