Odpowiedzi

2010-03-27T22:49:31+01:00
20x=67-21
20x=46|:20
x=2 6/10
2010-03-27T22:50:08+01:00
20x + 21 = 67 / -21
20x = 46 / ÷20
x = 2,3
2010-03-27T22:51:16+01:00
20x+21=67 / - 21
20x=46 /:20
x=2,3