I have reduced the problem involving different forces and a couple in a 2D plane to an equivalent force-couple system. The force F is -27.5lbi + 11.65lbj, and the couple is -66.8inlbk. I need the single offset resultant that accounts for the couple. The way I thought to solve it was to take the couple and set it equal to r (unknown xi +yj) crossed with the force. But this gives me two unknowns with one equation, and I don't know where to go from here. Thanks!