Răspunsuri

2014-09-02T19:10:16+03:00
1. daca x>1 => 3x-1=x-1 => 2x=0 => x=0
2. daca x<1/3 => 1-3x=1-x => 0=2x => x=0
3. daca 1/3<=x<=1 => 3x-1=1-x => 4x=2 => x = 2/4 = 1/2