Respuesta :

[tex]y=4x+rx+6 [/tex] 

[tex]y-6=4x+rx [/tex]    [tex]Subtract \ 6 \ from \ both \ sides[/tex] 

[tex]y-6=x(4+r) [/tex]    [tex]Factor \ out \ the \ common \ term \ x[/tex] 

[tex] \dfrac{y-6}{4+r} =x[/tex]   [tex]Divide \ both \ sides \ by \ 4+r[/tex]