Odpowiedź :
a)
[tex]6x + 5 = 6 \times 8 + 5 = 48 + 5 = 53[/tex]
b)
[tex]3y + 20 = 3 \times ( - 9) + 20 = - 27 + 20 = - 7[/tex]
c)
[tex]2(8 - n) = 2(8 - 0) = 2 \times 8 = 16[/tex]
d)
[tex]3x - 4 = 3 \times ( - 3) - 4 = - 9 - 4 = - 13[/tex]
e)
[tex]2x + 3y - 5 = 2 \times ( - 4) + 3 \times 2 - 5 = - 8 + 6 - 5 = - 7[/tex]