Răspuns:
Explicație pas cu pas:
4a) 4x+2≤14 pt x≥-1/2
4x≤12 x≤3 x={0,1,2,3}
b)
-4x-2≤14 x<-1/2
-4x≤16 x≥-4 x={-4,-3,-2,-1}
5 x-2<9 x≥2
x<7 x={2,3,4,5,6,}
-x+2<9 x<2
-x<7 x>-7 x={-6,-5,-4,-3,-2,-1,0,1)
solutii sunt :-2 si 6
