A
3x ≤ 2x+1
3x-2x ≤ 1
x ≤ 1
x € {1}, x€N*
A= {1}
B
x > 8
x € {9, 10, 11, 12, 13, 14, ..........}
B = {9, 10, 11, 12, 13, 14, 15, .......}
C
3x-6 ≥ 2x-1 /+1
3x-5 ≥ 2x
3x-2x ≥ 5
x ≥ 5
C= {5, 6, 7, 8, ............}
D= 2•x, x€C
D= {10, 12, 14, 16, ..........}
B U D = {9, 10, 11, 12, 13, 14, 15, 16, 17, ....}
C Π A = ∅
Asta e tot... Succes!
