Объяснение:

2.

a){4x+y=2,

2x-3y=8;

{y=2-4x,

2x-3(2-4x)=8;

{y=2-4x,

2x-6+12x=8;

{y=2-4x,

2x+12x= 8+6;

{y=2-4x,

14x =14;

{y=2-4x,

x=1;

{x=1,

y=2-4•1;

{x=1,

[tex] y = - 2[/tex]

(1;-2)