Răspunsuri

2014-11-15T12:26:42+02:00
9x-13=4(2x+1)+x-17 => 9x-13=8x+4+x-17 => 9x-13=9x-13 => 9x-9x=13+13 =>
x=0
2014-11-15T12:27:29+02:00
9x-13=4(2x+1)+x-17
9x-13=8x+4+x-17
9x-8x-x=-17+4+13
0=0