Question
Mary spent 4 days making some cupcakes for sale. Each day, she made 7 more cupcakes than the day before. She made a total of 286 cupcakes. How many cupcakes did she make on the first day?
3 m

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Mary spent 4 days making some cupcakes for sale. Each day, she made 7 more cupcakes than the day before. She made a total of 286 cupcakes. How many cupcakes did she make on the first day?