Răspuns :
[tex]0.5x + 1 = 3[/tex]
[tex] \frac{5x}{10} + 1 = 3[/tex]
[tex] \frac{x}{2} + 1 = 3[/tex]
[tex] \frac{x}{2} = 3 - 1[/tex]
[tex] \frac{x}{2} = 2[/tex]
[tex]x = 2 \times 2[/tex]
[tex]x = 4[/tex]
x € {2,3,4}
[tex] \frac{5x}{10} + 1 = 3[/tex]
[tex] \frac{x}{2} + 1 = 3[/tex]
[tex] \frac{x}{2} = 3 - 1[/tex]
[tex] \frac{x}{2} = 2[/tex]
[tex]x = 2 \times 2[/tex]
[tex]x = 4[/tex]
x € {2,3,4}