dau coroana vă rogggg!!!!!

Răspuns:
[tex]4x - 2(x + 7) = 2x - 2(x + 1) \\ 4x - 2x - 14 = 2x - 2x - 2 \\ 2x - 14 = - 2 \\ 2x = 14 - 2 \\ 2x = 12 \\ x = \frac{12}{2} = 6[/tex]