Odpowiedzi

2010-02-16T12:12:14+01:00
4z+35=-z+5
4z+z=5-35
5z=-30/:5
z=-6
2010-02-16T12:12:30+01:00
4z + 35 = -z +5
4z + z = 5 - 35
5z = -30
z = -6
2010-02-16T12:13:03+01:00
4z+35=-z+5
4z+z=-35+5
5z=-30/5
z=-6
:)