________
7x = 0
x = 0
x + 2y = 2
0 + 2y = 2
2y = 2
y = 1
ответ : ( 0 ; 1)
x+2y=2
3x-y=-1
x=2-2y
3(2-2y)-y=-1
6-6y-y=-1
-7y=-7
y=1
x=2-2
x=0, y=1
/x,y/=(0,1/
________
7x = 0
x = 0
x + 2y = 2
0 + 2y = 2
2y = 2
y = 1
ответ : ( 0 ; 1)
x+2y=2
3x-y=-1
x=2-2y
3(2-2y)-y=-1
x=2-2y
6-6y-y=-1
x=2-2y
-7y=-7
x=2-2y
y=1
x=2-2
y=1
x=0, y=1
/x,y/=(0,1/