There are 7 hexagons, all have numbers on there sides.
The hexagons need to be placed next to each other - 1 in the center and the 6 others around it - so each two adjacent sides has the same numbers.
The algorithm is: Find the one that goes in the center ( see the hint for this ) Next, pick a number on the center figure, find two figures which have a common number which, when lined up with the center, starts on the number you picked, and ends on the adjacent number. There was more than one possiblility, so you might have to try a couple combonations. If you get that far, the rest sort of falls into place.