A.
[tex]3x + 5 = 4 + 2x + 1 \\ 3x - 2x = 4 + 1 - 5 \\ x = 0[/tex]
B.
[tex]2x - 2 + x = 3x - 1 \\ 2x + x - 3x = - 1 + 2 \\ 0 ≠ 1[/tex]
C.
[tex]4x - 1 = 3(x + 1) + (x - 4) \\ 4x - 1 = 3x + 3 + x - 4 \\ 4x - 1 = 4x - 1 \\ 0 = 0[/tex]
D.
[tex] - 6 + x = - x + 6 \\ - 12 = - 2x \\ x = 6[/tex]
ODPOWIEDŹ B