Question

{x|x apartine N,6|x si 3*(x+2) mai mic sau egal x+42}

Answer 1

3x+6 ≤ x+42
3x-x≤ 42-6
2x ≤ 36
x ≤ 36 :2
x ≤ 18 si 6/x
x∈{0,6,12,18}