Question

pe asta nu o rezolv in veci :|

Answer 1

x/2+ 9/2 =2x  aducem la acelasi numitor

x+9+4x

x-4x= -9

-3x= -9

3x=9
x=3

Answer 2

$\frac{x}{2}+ \frac{9}{2}= 2x$
$\frac{9+x}{2}=2x$
$9+x = 4x$
$9=3x$
$x=3$