from one piece of walnut, sam cut two 9 1/2 in. strips for 2 sides of a frame. he cut two 11 3/4 in. strips each for the other 2 sides. sam had 5 1/2 in. of walnut left. how long was the piece of walnut when he started?

2 * 9 1/2 = ?

2 * 11 3/4 = ?

Add the two products together. Add them to 5 1/2 to find the original length of the walnut.