# Sum up the loads at same position on a deflected beam

I am computing the deflection of a beam.

If the length of the beam is 10 m and I have load at the position 4 m from left with force 5 N.

Now I add another load at the exact same position with force 4 N.

Can I just sum up the forces and write 9 N instead of 5 N?

It's a school exercise in which I'm told to plot the deflected beam and show all the loads. The only clever way to show the loads is to plot arrows at the positions and annotate the arrows with the load force. But if I have many loads at the same position, it will be quite messed up.