Odpowiedź:
7-(3x+2y)+(-5y-8x) = 7-3x-2y-5y-8x = -11x-7y+7
[tex]7-(3x+2y)+(-5y-8x)=7-3x-2y-5y-8x=7-11x-7y=-11x-7y+7[/tex]