Question
Opal bought some buttons. She gave 15 of the buttons to her brother and sold 37 of the remaining buttons. After that, she bought another 57 buttons and had the same number of buttons that she bought at first. How many buttons did Opal buy at first?
4 m

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Opal bought some buttons. She gave 15 of the buttons to her brother and sold 37 of the remaining buttons. After that, she bought another 57 buttons and had the same number of buttons that she bought at first. How many buttons did Opal buy at first?