Răspunsuri

2014-03-04T20:17:49+02:00
7x+3=3x+4x+6
7x+3=7x+6
7x-7x=6-3
vei avea ca 0=3 Fals
2014-03-04T20:18:02+02:00
7x+3=3x+ 2(2x+3) =>: 7x+3=3x+4x+6 -> 7x-3x-4x=3 => 0=3 -0