You are building a work table from scrap wood. you have boards of lengths ab, cd, ef, gh, jk and lm to use for making the six legs. ab is 5 inches shorter than cd, and cd is for 4 inches linger than ef. ef and gh are the same length and so are ab and jk. finally, ab is 2 inches longer than lm. you need to cut the boards to make six legs of equal length.