A druggist fell victim to a fire the day after receiving a small shipment from the warehouse. The shipment consisted of 15 cases of cold tablets, vitamins, and aspirins having a total value of $92. If cold tablets were valued at $7.00 per case, the vitamins at $10.00 per case, and the aspirins at $3.00 per case, and if there was one fewer case of aspirins than of the other two combined, how many cases of each type were in the shipment?