Odpowiedź:
A)
[tex]2x - 4 = 4 \\ 2x = 4 + 4 \\ 2x = 8 \\ x = 4[/tex]
B)
[tex]4 - x = 3 \\ -x = 3 - 4 \\ x = 1[/tex]
C)
[tex]3x - 5 = 10 \\ 3x = 10 + 5 \\ 3x = 15 \\ x = 5[/tex]
D)
[tex]12 - x = x \\ - x - x = - 12 \\ - 2x = - 12 \\ \times = 6[/tex]
E)
[tex]x - 16 = 16 - x \\ x + x = 16 + 16 \\ 2x = 32 \\ x = 16[/tex]
