Giải các phương trình sau : a. x-(x/2-(3+x)/4))/2=3-(1-(6-x)/3). 1/2)/2

* Hướng dẫn giải

$x-\frac{\frac{x}{2}-\frac{3+x}{4}}{2}=3-\frac{\left(1-\frac{6-x}{3}\right).\frac{1}{2}}{2}\iff \frac{2x-\frac{2x-3-x}{4}}{2}=\frac{6-\frac{3-6+x}{3}.\frac{1}{2}}{2}$

$\begin{array}{l}\frac{8x-x+3}{4}=\frac{18+3-x}{6}\\ \iff \left(7x+3\right).6=\left(21-x\right).4\iff 42x+18=84-4x\iff x=\frac{33}{23}\end{array}$