Răspuns:
[tex]0,5x+3=0\\\\\frac{5}{10}x+3=0\\\\\frac{5x}{10}+3=0\\\\\frac{1}{2}x+3=0\\\\\frac{x}{2}+3=0\\\\\frac{x}{2}= -3\\x=-3*2\\x=-6[/tex] (am simplificat fracția 5x/10 cu 5)
Verificare : x= -6
0,5•(-6)+3= -3+3=0
Sper că te-am ajutat!