20 is the total so put it on the right side of the equals sign...
? + ? = 20
let x represent the smaller piece.
? + x = 20
now we know the other piece is 4 feet longer. this means...
(4+x) + x = 20
4+x=20 lol^^' this is the answer i dont know how to show work
9.5m questions
12.2m answers