Odpowiedzi

2010-03-28T13:41:04+02:00
Y+3=x-3
-x=-y-3-3
-x=-y-6 /(-1)
x=6y

2x + 2y = 60
2x=-2y+60
2x=58y /2
x=29y

chyba tak ma być :D
2010-03-28T13:41:13+02:00
Y+3 = x- 3
2x + 2y = 60

y-x=-6 |*-2
2y+2x=60

-2y+2x=12
2y+2x=60
____________
4X=72 |/4
x=18

y=18-3-3
y=12
2010-03-28T13:42:21+02:00
Y+3=x-3
2x+2y=60

y=x-6
2x+2(x-6)=60

y=x-6
2x+2x-12=60

y=x-6
4x=72 |:4

x=18
y=18-6

x=18
y=12