bonjour =)
[tex]8 -2x\ \textgreater \ -(2x+6) \\ 8-2x\ \textgreater \ -2x-6 \\ -2x+2x\ \textgreater \ -6-8 \\ 0x\ \textgreater \ -14[/tex]
[tex]-x+2 \geq 13+2x \\ -x-2x \geq 13-2 \\ -3x \geq -11 \\ x \leq \frac{-11}{-3} \\ x \leq \frac{11}{3}[/tex]
[tex]3+2(4-x) \leq 5x \\ 3+8-2x \leq 5x \\ -7x \leq -11 \\ x \geq \frac{-11}{-7} \\ x \geq \frac{11}{7} [/tex]