Answer:
The length of:
Longest piece= 22 in.
Middle piece= 18 in.
and shortest piece= 13 in.
Explanation:
It is given that:
A 53 in. sandwich is cut into three pieces so that the middle piece is 5 in. longer than the shortest piece and the shortest piece is 9 in. shorter than the longest piece.
Let the longest piece = x in.
This means that the length of the shortest piece is: (x-9) in.
and the middle piece is: (x-9)+5= (x-4) in.
Hence, we have:

Hence, the length of the longest piece is: 22 in.
Length of the shortest piece is: 22-9=13 in.
and the length of the middle piece is: 22-4=18 in.