Odpowiedzi

2010-01-14T19:44:56+01:00
2x-y=5
X-Y=5-2
x-y=3

2-y= 4x-1
2+1=4X+y
3=4x-y
2010-01-14T19:46:03+01:00
2x-y=5
2-y= 4x-1

2x-y=5
-4x-y=-1-2

2x-y=5
-4x-y=-3 I * (-1)

2x-y=5
4x+y=3

6x=8 /:6
x=8/6

2x-y=5
x=8/6

2*8/6-y=5
x=8/6

8/3-y=5
x=8/6

-y=5- 8/3
x=8/6

-y=2 1/3
x=8/6

y=-2 1/3
x=8/6