Question
There were some children in the music room. After 9 girls left the music room and 14 boys entered the music room, there were 161 children in the music room. How many children were there in the music room at first?
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There were some children in the music room. After 9 girls left the music room and 14 boys entered the music room, there were 161 children in the music room. How many children were there in the music room at first?