Odpowiedź:
[tex]3(2x + 4) - 4x = 2 - 2(x + 1) \\ 6x + 12 - 4x = 2 - 2x - 2 \\ 2x + 12 = - 2x \\ 2x + 2x = - 12 \\ 4x = - 12 \\ x = - 12 \div 4 \\ x = - 3[/tex]
