Displacement means distance in a specified direction.
1)Move 9 m west and then 16 m east
Displacement = 16 - 9 = 7 m east
Distance = 16 + 9 = 25 m
2)Move 12 m east and then 12 m west
Displacement = 12 - 12 = 0 m east
Distance = 12 + 12 = 24 m
3) Move 5 m east and then 12 m east
Displacement = 5 + 12 = 17 m east
Distance = 5 + 12 = 17m
4)Move 13 m west and then 8 m east
Displeacement = 13 - 8 = 5 west
Distance = 13 + 8 = 21 m