3y-2x=16
-2x+3y=16
2x-3y=-16
6x+7y=-16
6x+7y+16=-16+16
6x+7y+16=0
x-2y=-9
x-2y+9=-9+9
x-2y+9=0
10y-x=15
-x+10y=15
x-10y=-15
1) (-5;2)
2) (-15/2;3/4)
Объяснение:
1) 3y-2x=16
y=16/3+2/3x
6x+7(16/3+2/3x)=-16
x=-5
y=16/3+2/3*(-5)
y=2
2) x-2y=-9
x=-9+2y
10y-(-9+2y)=15
y=3/4
x=-9+2*3/4
x=-15/2
3y-2x=16
-2x+3y=16
2x-3y=-16
6x+7y=-16
6x+7y+16=-16+16
6x+7y+16=0
x-2y=-9
x-2y+9=-9+9
x-2y+9=0
10y-x=15
-x+10y=15
x-10y=-15
1) (-5;2)
2) (-15/2;3/4)
Объяснение:
1) 3y-2x=16
6x+7y=-16
y=16/3+2/3x
6x+7y=-16
6x+7(16/3+2/3x)=-16
x=-5
y=16/3+2/3*(-5)
y=2
2) x-2y=-9
10y-x=15
x=-9+2y
10y-x=15
10y-(-9+2y)=15
y=3/4
x=-9+2*3/4
x=-15/2