2 2 x + y = 5
x - y = -2
или
0.224744871391589
2.22474487139159
-2.22474487139159
-0.224744871391589
y1 = -0.224744871391589 x1 = -2.224744871391589
y2 = 2.224744871391589 x2 = 0.224744871391589