x + 4y = -6
3x - y = 8
x = -4y -6
3(-4y-6) - y = 8
-12y - 18 - y = 8
-13y = 26
y = -2
x = -4*-2 - 6 = 8 - 6 = 2
ответ: (2; -2)
x + 4y = -6
3x - y = 8
x = -4y -6
3(-4y-6) - y = 8
-12y - 18 - y = 8
-13y = 26
y = -2
x = -4*-2 - 6 = 8 - 6 = 2
ответ: (2; -2)