Odpowiedź:
[tex]3x + 4 = 3 \times ( - 3) + 4 = - 9 + 4 = - 5[/tex]
[tex] - 8 - 2y = - 8 - 2 \times 4 = - 8 - 8 = - 16[/tex]
[tex]2x + 3y - 6 = 2 \times ( - 4) + 3 \times 3 - 6 = - 8 + 9 - 6 = 1 - 6 = - 5[/tex]
[tex] \frac{1}{5} a(a - 3) = \frac{1}{5} \times 15 \times (15 - 3) = 3 \times 12 = 36[/tex]
