Odpowiedzi

2010-04-11T16:03:30+02:00
2a+2b=8c||:2
a+b=4c
b=4c-a
9 3 9
2010-04-11T16:19:39+02:00
2a + 2b = 8c
2b = 8c - 2a /: 2
b = 4c - a
9 4 9