Question
There were 146 students at a parade square at first. After 47 of the girls and 12 of the boys left, there were still 21 more boys than girls at the parade square. How many boys were there at first?
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There were 146 students at a parade square at first. After 47 of the girls and 12 of the boys left, there were still 21 more boys than girls at the parade square. How many boys were there at first?