Question

Тема системные неравенства
2)
{-2х≤-3
{ х≤3

6)
{ 1-0,5x<4-x
{ 9-2,8x>6-1,3x

(Р.S.вместо двух фигурных одна большая в примерах)

помогите плиз​

Answer 1

( 2 )

$\left \{ {{-2x\leq -3} \atop {x\leq 3}} \right.\\\\\left \{ {{x\geq-3:(-2)} \atop {x\leq 3}} \right. \\\\\left \{ {{x\geq 1,5} \atop {x\leq 3}} \right.$

x ∈ [ 1,5 ; 3 ]

( 6 )

$\left \{ {{1-0,5x<4-x} \atop {9-2,8x>6-1,3x}} \right. \\\\\left \{ {{-0,5x+x<4-1} \atop {-2,8x+1,3x>6-9}} \right.\\\\\left \{ {{0,5x<3} \atop {-1,5x>-3}} \right. \\\\\left \{ {{x<3:0,5} \atop {x<-3:(-1,5)}} \right. \\\\\left \{ {{x<6} \atop {x<2}} \right$

x ∈ ( -∞ ; 2 )