Răspuns :
Răspuns: 13-2x-5=-4
2x-5=-4-13
2x-5=-17
2x=-17+5
2x=-12
X=-12:2
X=-6
Sper ca te am ajutat
Răspuns:
Aici sunt 2 cazuri :
1.Cand |-2x-5|=-2x-5
2.Cand |-2x-5|=2x+5
1. 13-(-2x-5)=-4; 13+2x+5=-4
18+2x=-4
2x=-22
x=-11
2. 13-2x-5=-4; 8-2x=-4
-2x=-12
x=6
Succes!