а) у=х+6; у=-2
х+6=-2х
3х=-6
х=-2
у= -2 ×(-2)=4
б) у=х-5; у=х-1
х-1=х-5
0≠6
∅
a) x = 6 - y
y = -2x;
x= 6 + 2x
-x = 6
x = -6
y = 12
б) y = x - 5
x= -1 - y;
y = -1 - y - 5
2y = -6
x = -1 - y;
y = -3
x = 2
а) у=х+6; у=-2
х+6=-2х
3х=-6
х=-2
у= -2 ×(-2)=4
б) у=х-5; у=х-1
х-1=х-5
0≠6
∅
a) x = 6 - y
y = -2x;
x= 6 + 2x
y = -2x;
-x = 6
y = -2x;
x = -6
y = 12
б) y = x - 5
x= -1 - y;
y = -1 - y - 5
x= -1 - y;
2y = -6
x = -1 - y;
y = -3
x = 2