Odpowiedzi

2009-12-20T08:30:55+01:00
2009-12-20T08:33:06+01:00
12x - 8y + 3y - 7x + 5y
12 * 5 - 8 * 7 + 3 * 7 - 7 * 5 + 5 * 7
60 - 56 + 21 - 35 + 35 = 25
1 5 1
2009-12-20T09:05:44+01:00
12*5 - 8*7 + 3*7 -7*5+ 5*7=
60-56+21-35+35=25
1 5 1