After Sten gave away 1/8 of his record collection, he had 14 records left. How many records did he have before he gave some away. Make sure to show work.

Let r be the # of records in Sten's original collection. He gave away r/8 records and had 14, or 7r/8, records left. Solve 14 = 7r/8 for r:

Reduce this equation by dividing both sides by 7: 2 = r/8. Mult. both sides by 8 results in r = 16. Sten originally had 16 records.