Respuesta :

3x + 9 = 6x

3x (-3x) + 9 = 6x (-3x)

9 = 6x - 3x

9 = 3x

9/3 = 3x/3

x = 3

hope this helps
3x+9=6x
9=3x (subtract 3x from both sides)
x= 3 (divide both sides by 3 to get ur answer)