x = -7-y
(-7-y) * y = 6
-7y-y^2 - 6 = 0
D = 49-4*(-1)*(-6)=25
y1 = 7-sqrt(25)/2*(-1) = -1
y2 = 7+sqrt(25)/2*(-1) =-6
x1 = -7+1 = -6
x2 = -7+6 = -1
(-7-y) * y = 6
-7y-y^2 - 6 = 0
D = 49-4*(-1)*(-6)=25
y1 = 7-sqrt(25)/2*(-1) = -1
y2 = 7+sqrt(25)/2*(-1) =-6
x1 = -7+1 = -6
x2 = -7+6 = -1
извиняюсь забыла вот это в самом начале: x = -7-y
