Respuesta :

[tex]C=85x+60[/tex] 

[tex]c-60=85x[/tex]       [tex]\ Subtract \ 60 \ from \ both \ sides[/tex] 

[tex] \dfrac{c-60}{85} = x [/tex]        [tex]\ Divide \ both \ sides \ by \ 85[/tex] 

[tex]x= \dfrac{c-60}{85} [/tex]
racerchick
C=85x+60
Subtract 60 from both sides and you get c-60=85x divide both side by 85 and get c-60 over 85=c