Question

Aflati numerele naturale x mai mai mic decat 4, pentru care:3 (x-2)+14 <16

Answer 1

3 ( x - 2 ) + 14 < 16

3 x - 6 + 14 < 16

3 x + 8 < 16

3 x < 16 - 8

x < 3 ⇒ x = { 0, 1, 2 } ∈ N

Verific:

3 ( 0 - 2) + 14 = - 6 + 14 = 8 < 16

3 ( 1 - 2) + 14 = - 3 + 14 = 11 < 16

3 ( 2 - 2 ) + 14 = 14 < 16

Solutii: { 0, 1, 2 } ∈ N