Respuesta :

Cd+e = 21

Cd + e - e = 21 - e

Cd = 21 - e

Cd/C = 21-e/C

d = 21-e/C.
[tex]Cd+e = 21 [/tex]    [tex]Equation[/tex]

[tex]Cd + e - e = 21 - e [/tex]  [tex]Subtract \ e \ from \ both \ sides[/tex]

[tex]Cd = 21 - e [/tex]    [tex]Simplify [/tex]

[tex]Cd/C = 21-e/C [/tex]  [tex]Divide \ both \ sides \ by \ C[/tex]

[tex] d = 21-e/C.[/tex]  [tex]Solution[/tex]