Răspuns :
2x-13 _< 5
2x _<5 + 13
2x _< 18
x _< 18 : 2
x _< 9
Solutii = 0,1,2,3,4,5,6,7,8,9
2x _<5 + 13
2x _< 18
x _< 18 : 2
x _< 9
Solutii = 0,1,2,3,4,5,6,7,8,9