Odpowiedzi

2010-04-09T20:38:42+02:00
4(x-1)+5=1+2x
4x-4+5=1+2x
4x-2x=1+4-5
2x=0 |:2
x=0
1 5 1
2010-04-09T20:39:13+02:00
4(x-1)+5=1+2x
4x-4+5=1+2x
4x-2x=1+4-5
2x=5-5
2x=0
x=0
1 5 1