Odpowiedzi

2009-05-10T20:55:45+02:00
Y= 3 - 3x
-x+2y=-8

-x + 6 - 6x = -8
-7x =- 14
x=2



y= 3 - 3x
y= 3 -6
y=-3
2009-05-10T21:00:43+02:00
3x+y=3
-x+2y= -8

y=3-3x
-x+2(3-3x)= -8
-x+6-6x= -8
-7x= -8 -6 /÷(-7)
x=2
y=3-3×2
y= -3
x=2
2009-05-10T21:01:26+02:00
3x+y=3
-x+2y=-8

y=3-3x
-x+2(3-3x)=-8

y=3-3x
-x+6-6x=-8

y=3-3x
-x-6x=-8-6

y=3-3x
-7x=-14 |÷(-7)

y=3-3x
x=2

y=3-3×2
x=2

y=3-6
x=2

y=-3
x=2