Răspuns :
a) x>4 -> x aparține (4;5;6;7;8;....)
b) x>3 -> x aparține (3;4;6;7;.....)
c) x>2 -> x aparține (2;4;5;6;7;....)
d) x<= 1 (mai mic sau egal)
-> x aparține (....;-3;-2;-1;0;1]
Sper ca te am ajutat!!!!
a) x-4>0
x>4
x∈{4,5,6,7,8,....}
b) x-3>0
x>3
x∈{3,4,5,6,7,...}
c) -x+2<0
-x<-2 / ×(-1)
x>2
x∈{2,3,4,5,6,.....}
d) x-1≤0
x≤1
x∈{......,-1,0,1}