Question

numerele naturale care verifica inecuatia 2·X+3<11 sunt ....... va roggg

Answer 1

2*x+3<11/-3
   2*x<8/:2
      x<4
                  x=3,2,1,0.

Answer 2

2x+3 < 11  =>  2x < 8  =>  x < 4  adica  x = {0 ; 1 ; 2 ; 3}