Question
There were 138 students at a hall at first. After 58 of the boys and 12 of the girls left, there were still 13 more girls than boys at the hall. How many girls were there at first?
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There were 138 students at a hall at first. After 58 of the boys and 12 of the girls left, there were still 13 more girls than boys at the hall. How many girls were there at first?