Odpowiedzi

2012-08-03T09:18:17+02:00

x-2y=5

3x-y=0 /*(-2)

 

x-2y=5

-6x+2y=0

------------- +

-5x=5/:(-5)

x=-1

-1-2y=5

-2y=5+1/:(-2)

y=-3

 

x=-1

y=-3

1 5 1
  • Użytkownik Zadane
2012-08-03T09:20:36+02:00

x - 2y = 5    / *(-1)

3x - y = 0   / *2

 

-x + 2y = -5

6x - 2y = 0

----------------

5x = -5

x = -1

 

x - 2y = 5

-1 - 2y = 5

-2y = 5 + 1

-2y = 6

y = -3

 

x = -1

y = -3

1 5 1