Question

{0.8(x-3) - 3,2 <0.3(-X-4)
{0.2 (1+2х) > -(х-0.2)​

Answer 1

$\left \{ {{0,8(x-3)-3,2<0,3(-x-4)} \atop {0,2(1+2x)>-(x-0,2)}} \right.\\\\\left \{ {{0,8x-2,4-3,2<-0,3x-1,2} \atop {0,2+0,4x>-x+0,2}} \right.\\\\\left \{ {{0,8x+0,3x<-1,2+2,4+3,2} \atop {0,4x+x>0,2-0,2}} \right.\\\\\left \{ {{1,1x<4,4} \atop {1,4x>0}} \right.\\\\\left \{ {{x<4} \atop {x>0}} \right.\\\\Otvet:\boxed{x\in(0 \ ; \ 4)}$