Odpowiedź :
[tex]4a - 2(3 + a) = 4a - 6 - 2a = 2a - 6[/tex]
[tex]2 \times ( - 1) - 6 = - 2 - 6 = - 8[/tex]
[tex]5x + 3y - 1 = 5 \times 2 + 3 \times ( - 3) - 1 = 10 - 9 - 1 = 0[/tex]
[tex]4a - 2(3 + a) = 4a - 6 - 2a = 2a - 6[/tex]
[tex]2 \times ( - 1) - 6 = - 2 - 6 = - 8[/tex]
[tex]5x + 3y - 1 = 5 \times 2 + 3 \times ( - 3) - 1 = 10 - 9 - 1 = 0[/tex]