Respuesta :

Tsukiyume
x = 8 because 1/2x = 4
jhonyy9
hope i understand it right 

-1/2x +3 = -x +7

(-x+6)/2 = (-2x +14)/2

-x+6 = -2x +14

-x +2x = 14-6

x = 8 so choice B is right sure 

hope this will help you