Solution set of (Χ+2)+3(Χ-4) ≥ 5 , Χ ∈ Ν (natural number) is

Subject : Math
Class : 2 Junior High School

Answer :
(x + 2) + 3(x - 4) ≥ 5
(x + 2) + 3x - 12 - 5 ≥ 0
4x - 15 ≥ 0
4x ≥ 15
x ≥ 15/4

Hp : {x ≥ 15/4 , x € N}
Hp : {3 , 2 , 1}

(x + 2) + 3(x - 4) >= 5
x + 2 + 3x - 12 >= 5
4x - 10 >= 5
4x >= 15
x >= 15/4

HP = {4,5,6,...}