Odpowiedzi

2009-10-01T20:29:10+02:00
X+2y=6
x-y=3

x+2y=6
x=3+y

3+y+2y=6
x=3+y


3y=3 /:3
x=3+y


y=1
x=3+1=4

Najlepsza Odpowiedź!
2009-10-01T20:29:21+02:00
X+2y=6
x-y=3

x+2y=6
x=3+y

3+y+2y=6
3+3y=6
3y=3
y=1

x=3+y
x=3+1
x=4

y=1
x=4
2009-10-01T20:30:03+02:00
X+2y=6
x-y=3

x=6-2y
x-y=3

x=6-2y
6-2y-y=3

x=6-2y
-3y=-3 /:(-3)

x=6-2y
y=1

x=6-2*1
y=1

x=6-2
y=1

x=4
y=1