Răspunsuri

2014-11-02T18:09:31+02:00
Aducem la acelasi numitor (20) si avem;
10x-20x+14=20x-5-4x+4+11
10x-20x-20x+4x=-5+4+11-14
-26x=-4
x=4/26 
x=2/13