Odpowiedzi

2009-12-21T10:28:39+01:00
X-10-x-6y=2x+2y
3x-1+4y=4x+2y

x - x-6y - 2x - 2y = 10
3x + 4y - 4x - 2y = 1

-2x - 8y = 10
- x + 2y = 1 / × -2

-2x - 8y = 10
2x - 2y = -2

-10y = 8
y = -8/10
y = -4/5

2x - 2y = -2
2x - 2 × ( -4/5 ) = -2
2x = -2 + 1³/₅
2x = ²/₅
x = ¹/₅