Respuesta :
[tex](x-12):6=9\\\\\dfrac{x-12}{6}=9\ \ \ \ |multiply\ both\ sides\ by\ 6\\\\x-12=54\ \ \ \ |add\ 12\ to\ both\ sides\\\\x=66[/tex]
[tex]x-12:6=9\\\\x-2=9\ \ \ \ |add\ 2\ to\ both\ sides\\\\x=11[/tex]
[tex]x-12:6=9\\\\x-2=9\ \ \ \ |add\ 2\ to\ both\ sides\\\\x=11[/tex]