Odpowiedzi

2010-01-18T14:11:17+01:00
X/y=1,25
1,6x-3y=-81

x=1,25y
0,6x-3y=-81

0,6(1,25y)-3y=-81
0,75y-3y=-81
-2,25y=-81
y=36

x/36=1,25
x=1,25*36
x=45
2 5 2