Question
Packet M and Packet N contained a total of 84 cards. After 34 cards were transferred from Packet M to B, Packet N contained thrice as many cards as Packet M. How many cards were there in Packet M at first?
4 m

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Packet M and Packet N contained a total of 84 cards. After 34 cards were transferred from Packet M to B, Packet N contained thrice as many cards as Packet M. How many cards were there in Packet M at first?