d, $\frac{1}{4}$x - 2x + 3$\frac{1}{3}$ = 6 $\frac{1}{2}$
x . ( $\frac{1}{4}$ - 2 ) + $\frac{10}{3}$ = $\frac{13}{2}$
x . ( $\frac{1}{4}$ - $\frac{8}{4}$ ) = $\frac{13}{2}$ - $\frac{10}{3}$
x . ($\frac{-7}{4}$) = $\frac{39}{6}$ - $\frac{20}{6}$
$\frac{-7}{4}$x = $\frac{19}{6}$
x = $\frac{19}{6}$ : ($\frac{-7}{4}$)
x = $\frac{19}{6}$ . $\frac{-4}{7}$
x = $\frac{-38}{21}$
Vậy x = $\frac{-38}{21}$
(xin hay nhất)
Chúc bạn học tốt!!!
