Odpowiedzi

2010-03-25T20:00:17+01:00
X:3+x:2+x=7 /*6
2x+3x+6x=42
11x=42 /:11
x=3 9/11

2010-03-25T20:02:02+01:00
X:3+x:2+x=7
x/3+x/2+x=7 /*6
2x+3x+6x=42
11x=42 /11
x=3 9/11