Tyler was starving and equation and this last line of work read -12=12 what does this mean ?

Identify the converse of the following conditional: if a point is in the first quadrant, then its coordinates are positive. if the coordinates of a point are not positive, then the point is not in the first quadrant. if the coordinates of a point are positive, then the point is in the first quadrant. if a point is in the first quadrant, then its coordinates are positive. if a point is not in the first quadrant, then the coordinates of the point are not positive.

If f(x)=2x-6 and g(x)=3x+9, find (f-g)(x)

F(x)= 4x g(x) =x-1 what is f(x) divided by g(x)