The equation to solve for coefficient of friction is μ = F/N, where μ represents the coefficient of friction, F represents the frictional force, and N represents the normal force. This equation is derived from the relationship between the two forces involved in friction - the force of the object on the surface (F) and the force perpendicular to the surface (N). By dividing the frictional force by the normal force, we can determine the coefficient of friction, which is a measure of how much resistance there is between two surfaces. I hope this helps!