Odpowiedzi

2010-03-09T18:58:44+01:00
X - Kasia
y- Asia

x+y= 24
4+x= 3y

x= 24-y
4+24-y= 3y

x= 24-y
28 =4y |:4

x= 24-y
7=y

x= 24-7
y=7


x= 17
y=7
2010-03-09T18:59:02+01:00
Razem=24
kasia3x
asiax

3x+x=24
4x=24/4
x=6
kasia=3*6=18
asia=6
2010-03-09T19:00:45+01:00
X- Kasia
y- Asia

x+y=24
3(y+4)=x+4

x+y=24
3y+12=x+4

x+y=24
-x+3y=-8

4y=16
y=4
x=24-4=20