Question
Erika had 66 more buttons than Emily at first. Emily gave 15 of her buttons to Erika. Erika now has 3 times as many buttons as Emily. How many buttons did Emily have at first?
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Erika had 66 more buttons than Emily at first. Emily gave 15 of her buttons to Erika. Erika now has 3 times as many buttons as Emily. How many buttons did Emily have at first?