Question
Irene bought some cards. She gave 13 of the cards to her brother and sold 27 of the remaining cards. After that, she bought another 22 cards and had the same number of cards that she bought at first. How many cards did Irene buy at first?
4 m

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Irene bought some cards. She gave 13 of the cards to her brother and sold 27 of the remaining cards. After that, she bought another 22 cards and had the same number of cards that she bought at first. How many cards did Irene buy at first?