The given three sentences can be combined into one as follows:
The fans want to go to the game, so they went to buy tickets but the tickets are expensive.
Conjunctions are characterized as the linking words which assist in linking or joining two words or phrases.
The given sentences can be joined to form a compound sentence using the coordinating conjunctions 'but' and 'so' as mentioned above.
This will help in keeping the ideas independent yet associate them coherently for better understanding.
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