Three small, initially neutral conducting spheres are placed on a horizontal track. $36$ electrons are removed from sphere C$.$ Sphere A is located $1$ mm to the left of Sphere B$,$ and Sphere C is located $2$ mm to the right of Sphere B$.$ Your task is to add or remove electrons from Sphere A and Sphere B so that the three spheres will be in translational equilibrium. How many electrons be added $($or subtracted$)$ from Sphere A$?$ How many electrons must be added $($or subtracted$)$ from Sphere B$?$