Odpowiedzi

2009-12-03T08:18:21+01:00
10x - 2 - 10y + 6 = 10x - 20y
18 - 4x - 24y - 2 = 12 - 3x
10x - 10x - 10y + 20y = 2 - 6
- 4x + 3x - 24y = 12 + 2 - 18
10y = - 4
- x - 24y = - 4
y = - 4/10
x + 24y = 4
x + 24 razy - 4/10 = 4
x - 96/10 = 4
10x - 96 = 40
10x = 40 + 96
10x = 136
x = 13 i 6/10 = 13 i 3/5
y = - 4/10 = - 2/5
y