Hi Guys !
Solved the PROBLEM ! ;-)
System Template: Gantry 5
PROBLEM:
1 ---> DUPLICATE content in all languages in Joomla multlanguage habilited;
2 ---> FACT: The particle "Page Content" in Gantry 5 Framework Layout was DUPLICATED !
RESOLUTION:
1 ---> Go to menu Joomla: Extensions> Themes > Hydrogen - Default Gantry 5;
2 ---> Inside in the template system, select: "Base Outline", after > Layout > Localize "Main" > "Page Content";
3 ---> Move to the DELETE which turns red when moving the duplicate "Page Content" particle up in template editing, drop on top;
4 ---> Click on "Save Layout", update the frontend site.
5 ---> All right !!! ;-)
PS: Sorry for my lack of attention. Unfortunately or fortunately, technology has many details that we sometimes fail to pay attention to. But, that this "error" is shared to help other people who, by chance, may go through the same problem.
Thanks !
Greetings !