zad. 1
D.
zad. 2
zad. 3
[tex]3 \times 4(4 - 2) = 2 \times 4(4 - 1) \\ 12 \times 2 = 8 \times 3 \\ 24 = 24[/tex]
A.
zad. 4
[tex]k +k + 1 + k + 2 = 12 \\ 3k + 3 = 12 \\ [/tex]
zad. 5
[tex]8x - 3 = 7x + 4 \\ 8x - 7x = 4 + 3 \\ x = 7[/tex]
