5}} \right.\; \left \{ {{x\geq 2} \atop {x>1}} \right. \; \; \to \; \; x\geq 2\; \; ;\; \; \underline {5\in [\, 2,+\infty )\; }\\\\\\5)\; \; \left \{ {{x+1<9} \atop {-2x<6}} \right.\; \left \{ {{x<8} \atop {x>-3}} \right. \; \; \to \; \; x\in (-3,8)\\\\\left \{ {{x-2>8} \atop {-3x<9}} \right.\; \left \{ {{x>10} \atop {x>-3}} \right. \; \; \to \; \; x>10\; \; ;\; \; x\in (10,+\infty )" alt="4)\; \; a)\; \left \{ {{-2x\geq 8} \atop {5x-1<9}} \right.\; \left \{ {{x\leq -4} \atop {x<2}} \right. \; \; \to \; \; x\leq -4\; \; ;\; \; \underline {-8\in (-\infty ,-4\, ]\; }\\\\\left \{ {{-5x\leq -10} \atop {3x+2>5}} \right.\; \left \{ {{x\geq 2} \atop {x>1}} \right. \; \; \to \; \; x\geq 2\; \; ;\; \; \underline {5\in [\, 2,+\infty )\; }\\\\\\5)\; \; \left \{ {{x+1<9} \atop {-2x<6}} \right.\; \left \{ {{x<8} \atop {x>-3}} \right. \; \; \to \; \; x\in (-3,8)\\\\\left \{ {{x-2>8} \atop {-3x<9}} \right.\; \left \{ {{x>10} \atop {x>-3}} \right. \; \; \to \; \; x>10\; \; ;\; \; x\in (10,+\infty )" align="absmiddle" class="latex-formula">