A 3.15 kg particle has the xy coordinates (-1.32 m, 0.339 m), and a 5.67 kg particle has the xy coordinates (0.996 m, -0.351 m). Both lie on a horizontal plane. At what (a) x and (b) y coordinates must you place a 1.95 kg particle such that the center of mass of the three-particle system has the coordinates (-0.946 m, -0.521 m)