Đáp án:
$\text{ 3(x-$\dfrac{1}{2}$) - 5(x+$\dfrac{3}{5}$) = -x + $\dfrac{1}{5}$ }$
$\text{<=> 3x - $\dfrac{3}{2}$ - 5x -3 = -x + $\dfrac{1}{5}$ }$
$\text{<=> 3x -5x +x = $\dfrac{1}{5}$ + $\dfrac{3}{2}$ + 3 }$
$\text{<=> -x = $\dfrac{47}{10}$ }$
$\text{<=> x= $\dfrac{-47}{10}$ }$
$\text{Vậy x= $\dfrac{-47}{10}$ }$