Net force=sum of forces.
Lets take the Force acting from right side_as positive.
And the Force acting from left side_as negative.
We took the opposite sides because the both forces are acting in opposite directions.
There will be no problem,if for differentiating,I call the positive force_F1 and the negative one_F2...right?
So,
Net force=F1+F2.
F2 is opposite as compared to F1 in direction.
So Net force=F1+(-F2).
Putting values;
Net force=22-13=9 N.
9 N is the magnitude of Force.
If your question means that this net force acts whether to the right side or left,then it acts towards the right side as it has also come out to be positive 9N not -9N which indicates it is parallel to the Force vector acting rightward.
