Đáp án:
x = $\dfrac{-38}{39}$
Giải thích các bước giải:
3$\dfrac{1}{4}$x - $\dfrac{1}{3}$ = -3$\dfrac{1}{2}$
$\dfrac{13}{4}$x-$\dfrac{1}{3}$ = $\dfrac{-7}{2}$
$\dfrac{13}{4}$x = ($\dfrac{-7}{2}$) + $\dfrac{1}{3}$
$\dfrac{13}{4}$x = $\dfrac{-19}{6}$
x = $\dfrac{-19}{6}$ : $\dfrac{13}{4}$
x = $\dfrac{-38}{39}$
Vậy x = $\dfrac{-38}{39}$
