Question
There were some children in the music room. After 18 boys left the music room and 17 girls entered the music room, there were 196 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 18 boys left the music room and 17 girls entered the music room, there were 196 children in the music room. How many children were there in the music room at first?