Finding the resultant of 3 Vectors modeling a force table

[Concavity]

Hey, sorry for the basic question, but I'm curious.

Can one create a resultant for 2 vectors that cannot be drawn head- to - tail, and are facing opposing directions?

The idea is that I set up a force table and took measurements on how many Newtons of force are acting upon each spring involving the force table, and represented it with 3 vectors.

Is it even possible to create a resultant for 2 of these vectors at a time, without totally disregarding their angle defining their direction?

All help is appreciated.

 

[mfb]

You can always add vectors - if you know their individual x,y,z-components, for example, simply add them.

If that does not help, I do not understand your question.