a) [tex]\displaystyle{x}[/tex] + 11 ≥ 7
[tex]\displaystyle{x}[/tex] ≥ 7 - 11
[tex]\displaystyle{x}[/tex] ≥ -4
[tex]\displaystyle{x}[/tex] ∈ {-4, -3, -2, -1, 0, 1, 2, ............., etc........}
b) [tex]\displaystyle{x}[/tex] - 3 ≤ 1
[tex]\displaystyle{x}[/tex] ≤ 1 + 3
[tex]\displaystyle{x}[/tex] ≤ 4
[tex]\displaystyle{x}[/tex] ∈ {4, 3, 2, 1, 0, -1, -2, ..........., etc.........}
c) 7 - [tex]\displaystyle{x}[/tex] < 4
[tex]\displaystyle{x}[/tex] < 7 - 4
[tex]\displaystyle{x}[/tex] < 3
[tex]\displaystyle{x}[/tex] ∈ {2, 1, 0, -1, -2, -3, .........., etc...........}
d) 2[tex]\displaystyle{x}[/tex] ≤ -8
[tex]\displaystyle{x}[/tex] ≤ (-8) ÷ 2
[tex]\displaystyle{x}[/tex] ≤ -4
[tex]\displaystyle{x}[/tex] ∈ {-4, -5, -6, -7, -8, -9, -10, ............., etc...........}
e) -[tex]\displaystyle{x}[/tex] < 6
[tex]\displaystyle{x}[/tex] > -6 (Când înmulțim cu -1, se schimbă semnul)
[tex]\displaystyle{x}[/tex] ∈ {-5, -4, -3, -2, -1, 0, ........................, etc............}
f) -[tex]\displaystyle{x}[/tex] ≥ -2
[tex]\displaystyle{x}[/tex] ≤ 2
[tex]\displaystyle{x}[/tex] ∈ {2, 1, 0, -1, -2, -3, -4, ...................., etc....................}
g) -[tex]\displaystyle{x}[/tex] < 0
[tex]\displaystyle{x}[/tex] > 0
[tex]\displaystyle{x}[/tex] ∈ {1, 2, 3, 4, 5, 6, 7, ................, etc...................}
h) -[tex]\displaystyle{x}[/tex] ≥ 0
[tex]\displaystyle{x}[/tex] ≤ 0
[tex]\displaystyle{x}[/tex] ∈ {0, -1, -2, -3, -4, -5, ..........., etc.......................}
- Lumberjack25
