1. Define Directions:

* Let "left" be the negative direction (-)

* Let "right" be the positive direction (+)

2. Represent Forces:

* Force 1 (left): -9 Newtons

* Force 2 (right): +3 Newtons

3. Calculate Net Force:

* Net Force = Force 1 + Force 2

* Net Force = -9 N + 3 N

* Net Force = -6 N

Answer:

The net force is 6 Newtons to the left (since it's negative).