How to simply ((4/x)-2)/((1/x)+3)

Someone . me. compound probability

Quadrilateral abcd in the figure below represents a scaled-down model of a walkway around a historic site. quadrilateral efgh represents the actual walkway. abcd is similar to efgh. what is the total length, in feet of the actual walkway?

George writes the mixed number as sum and uses the distributive property 1/2.-2/5=1/2-2+2/5=1/2