[tex]\begin{gathered} 5x-(3x-6)=18 \\ 5x-3x+6=18 \\ 2x+6=18 \\ 2x=18-6 \\ 2x=12 \\ x=\frac{12}{2} \\ x=6 \end{gathered}[/tex][tex]\begin{gathered} 2x+7=5x+16 \\ 2x-5x=16-7 \\ -3x=9 \\ x=\frac{9}{-3} \\ x=-3 \end{gathered}[/tex][tex]\begin{gathered} \frac{x}{3}-8=-2 \\ \frac{x}{3}=-2+8 \\ \frac{x}{3}=6 \\ x=18 \end{gathered}[/tex][tex]\begin{gathered} 3x-6=-12 \\ 3x=-12+6 \\ 3x=-6 \\ x=-\frac{6}{3} \\ x=-2 \end{gathered}[/tex][tex]\begin{gathered} \frac{x}{-3}=8 \\ x=(8)(-3) \\ x=-24 \end{gathered}[/tex]