zad. 3
[tex]45 = 3x - 2 + 2x + 2 + x + 3 \\ 45 = 6x + 3 \\ 6x = 42 \\ x = 7[/tex]
[tex]3x - 2 = 3 \times 7 - 2 = 21 - 2 = 19 \\ \\ 2x + 2 = 2 \times 7 + 2 = 14 + 2 = 16 \\ \\x + 3 = 7 + 3 = 10[/tex]
