Question

Am nevoie va rog repede✌️

Answer 1

3x - 2 ≤ 7
3x ≤ 9
x ≤ 3
x ∈ IN ⇒ x ∈ {0, 1, 2, 3}
A = {0, 1, 2, 3}
A - IN* = {0,1,2,3} - {1, 2, 3, ...} = {0}

Answer 2

3x-2≤7
3x≤9
x≤3
A={0,1,2,3}
N*={1,2,3,4............}
A/N*={0}