Respuesta :

[tex] \frac{c-1}{x+d} =cd[/tex]

times both sides by (x+d)

c-1=(cd)(x+d)
divide both sidess by cd
[tex] \frac{c-1}{cd} =x+d[/tex]
minus d from both sides
[tex] \frac{c-1}{cd} -d =x[/tex]