Đáp án:
Giải thích các bước giải:
a) $\frac{1}{2}x - \frac{1}{3} = \frac{1}{4}x - \frac{1}{6}$
$⇔\frac{1}{2}x - \frac{1}{4}x= \frac{1}{3} - \frac{1}{6}$
$⇔\frac{1}{4}x = \frac{1}{6}$
$⇔x=\frac{2}{3}$
b) $3(x-2)+2(x-1)=10$
$⇔3x-6+2x-2=10$
$⇔5x=18$
$⇔x=\frac{18}{5}$
c) $(x+2)^2=\frac{1}{2}-\frac{1}{3}$
$⇔(x+2)^2=\frac{1}{6}$
$⇔\left[\begin{matrix} x+2=\sqrt{\frac{1}{6}} \\ x-1=-\sqrt{\frac{1}{6}}\end{matrix}\right.$
$⇔\left[\begin{matrix} x=\sqrt{\frac{1}{6}}-2 \\ x=1-\sqrt{\frac{1}{6}}\end{matrix}\right.$