Odpowiedzi

2010-02-07T17:34:04+01:00
2x+7=19
2x=19-7
2x=12 /:2
x = 6

na pewno dobrze :)
2010-02-07T17:35:03+01:00
2x + 7 =19
2x= 19-7
2x= 12 /:2
x= 6
spr: 2*6 + 7 = 19
12+7=19
19=19
L=P