$a)|3x+2|-1=5x$
$|3x+2|=5x+1$
Nếu $3x+2≥0⇔x≥\frac{-2}{3}$
$⇒3x+2=5x+1$
$⇔-2x=-1$
$⇔x=\frac{1}{2}$ (nhận)
Nếu $3x+2<0⇔x<\frac{-2}{3}$
$⇒3x+2=-5x-1$
$⇔8x=-3$
$⇔x=\frac{-3}{8}$ ( loại )
$b)|3x-1|=|5x+1|$
$⇔3x-1=5x+1$ hay $3x-1=-5x-1$
$⇔-2x=2$ hay $8x=0$
$⇔x=-1$ hay $x=0$
$c)|2x+5|=|-6x+1|$
$2x+5=-6x+1$ hay $2x+5=6x-1$
$⇔8x=-4$ hay $-4x=-6$
$⇔x=\frac{-1}{2}$ hay $x=\frac{3}{2}$
