What is the simple predicate in sentence brush your teeth after every meal?

The simple predicate in the sentence "Brush your teeth after every meal" is brush.

Here's why:

* Predicate: The predicate is the part of a sentence that tells what the subject does or is.

* Simple Predicate: The simple predicate is the verb (or verb phrase) that forms the core of the predicate.

In this case, the subject is "you" (implied), and the verb "brush" tells us what the subject does.