Пожалуйста алгебру!Срочно , буду благодарен!!

№ 4
3№ 5
$3x(x-3)-(3x+1)(x+4)\ \textgreater \ 2-2(11x+3) \\ 3 x^{2} -9x-3 x^{2} -x-12x-4\ \textgreater \ 2-22x-6 \\ -22x-4\ \textgreater \ -22x-4$
не имеет решений.
№ 6
$\left \{ {{ \frac{5x-4}{6}-1\ \textgreater \ \frac{2x+1}{3} } \atop { {{ \frac{3x+1}{4}-2x\ \textgreater \ 2,5- \frac{3x-2}{8} }} \right. \\ \left \{ {{5x-4-6\ \textgreater \ 4x+2} \atop {6x+2-16x\ \textgreater \ 20-3x+2}} \right. \\ \left \{ {{5x-10\ \textgreater \ 4x+2} \atop {2-10x\ \textgreater \ 22-3x}} \right. \\ \left \{ {{5x-4x\ \textgreater \ 10+2} \atop {3x-10x\ \textgreater \ 22-2}} \right. \\ \left \{ {{x\ \textgreater \ 12} \atop {-7x\ \textgreater \ 20}} \right. \\ \left \{ {{x\ \textgreater \ 12} \atop {x\ \textless \ -2 \frac{6}{7} }} \right. \\$
Система не имеет решений