Question

0,5x +1=3;x€ {2,3,4}

Answer 1

$0.5x + 1 = 3$

$\frac{5x}{10} + 1 = 3$

$\frac{x}{2} + 1 = 3$

$\frac{x}{2} = 3 - 1$

$\frac{x}{2} = 2$

$x = 2 \times 2$

$x = 4$

x € {2,3,4}

Answer 2

sper sa te ajute raspunsul ;)