Genevieve needs to buy some uniform shirts for her new job. Store A sells uniform shirts for $12 each. Store B sells uniform shirts for $14.50 each. Genevieve has a coupon for $10 off her purchase at Store A and another coupon for $20 off her purchase at Store B. Write an
equation that can be used to determine s, the number of uniform shirts Genevieve can buy to
make the total purchase price the same for each store.