Răspunsuri

2014-05-31T18:04:57+03:00
3x+6 -1 ≤ x+9

3x+5 ≤x +9

3x-x ≤ 9-5

2x ≤ 4

x ≤ 2  ⇒A∈{0,1,2}
x∈N