Question

Распишите пожалуйста :3

Answer 1

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Answer 2

$3)\; \; \left \{ {{-2x\leq 8\; :(-2)} \atop {3x>-1,5}} \right. \; \; \left \{ {{x\geq -4} \atop {x>-0,5}} \right. \; \; \Rightarrow \; \; x>-0,5\\\\x\in (-0,5\; ;\; +\infty )$

$1)\; \; \left \{ {{x+3\geq -2} \atop {x+1,1\geq 0}} \right. \; \left \{ {{x\geq -5} \atop {x\geq -1,1}} \right. \; \; \Rightarrow x\geq -1,1\\\\x\in [-1,1\; ;\; +\infty )\qquad -----[-1,1\, ]\; ///////////////////\\\\2)\; \; \left \{ {{x<9} \atop {8-x>0}} \right. \; \; \left \{ {{x<9} \atop {x<8}} \right. \; \; \Rightarrow \; \; x<8\\\\x\in (-\infty ,8)\qquad /////////\; (8)--------\\\\5)\; \; \left \{ {{4x+3>3x} \atop {1+2x<0}} \right. \; \left \{ {{4x-3x>-3} \atop {2x<-1}} \right. \; \left \{ {{x>-3} \atop {x<-\frac{1}{2}}} \right. \; \; \Rightarrow \; \; -3<x<-\frac{1}{2}\\\\x\in (-3\; ;\; -\frac{1}{2}$

$4)\; \; \left \{ {{2(x+4)>6\; |:2} \atop {-3(x-1)\leq 9\; |:(-3)}} \right. \; \left \{ {{x+4>3} \atop {x-1\geq -3}} \right. \; \left \{ {{x>-1} \atop {x\geq -2}} \right. \; \; \Rightarrow \; \; x>-1\\\\x\in (-1,+\infty )$