How to Tell several objects/instances to perform a task

Hello,

Lets say you have 5 instances of a circle on the stage.

Now, lets say you want to make all of the circles _x += 5;

How can I do this without doing a repeat loop?

Isnt there a single line command that could be used? Such as:

{tell all circle objects} : _x += 5;

Any response is GREATLY appreciated.

Thanks
chris