Question
Sarah bought some buttons. She gave 13 of the buttons to her sister and sold 47 of the remaining buttons. After that, she bought another 30 buttons and had the same number of buttons that she bought at first. How many buttons did Sarah buy at first?
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Sarah bought some buttons. She gave 13 of the buttons to her sister and sold 47 of the remaining buttons. After that, she bought another 30 buttons and had the same number of buttons that she bought at first. How many buttons did Sarah buy at first?