Ответ:
(x, y) = (5,0)
Объяснение:
[tex]\left \{ {{-2x-2ay=-10} \atop {2x+6y=10}} \right.[/tex]
-2ay+6y
y=0
2x+6*0=10
x=5
(x,y) = (5,0)
[tex]\left \{ {{5+a*0=5} \atop {2*5+6*0=10}} \right.[/tex]
[tex]\left \{ {{0=0} \atop {10=10}} \right.[/tex]
(x,y) = (5,0)